# HG changeset patch
# Parent  89cbe8c49d05965b87815143d1944ab6964f12c7

diff --git a/browser/base/content/browser-kde.xul b/browser/base/content/browser-kde.xul
new file mode 100644
--- /dev/null
+++ b/browser/base/content/browser-kde.xul
@@ -0,0 +1,1248 @@
+#filter substitution
+<?xml version="1.0"?>
+# -*- Mode: HTML -*-
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<?xml-stylesheet href="chrome://browser/content/browser.css" type="text/css"?>
+<?xml-stylesheet href="chrome://browser/content/places/places.css" type="text/css"?>
+<?xml-stylesheet href="chrome://browser/content/usercontext/usercontext.css" type="text/css"?>
+<?xml-stylesheet href="chrome://browser/skin/controlcenter/panel.css" type="text/css"?>
+<?xml-stylesheet href="chrome://browser/skin/customizableui/panelUI.css" type="text/css"?>
+<?xml-stylesheet href="chrome://browser/skin/" type="text/css"?>
+
+<?xul-overlay href="chrome://global/content/editMenuOverlay.xul"?>
+<?xul-overlay href="chrome://browser/content/baseMenuOverlay.xul"?>
+<?xul-overlay href="chrome://browser/content/places/placesOverlay.xul"?>
+
+# All DTD information is stored in a separate file so that it can be shared by
+# hiddenWindow.xul.
+#include browser-doctype.inc
+
+<window id="main-window"
+        xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+        xmlns:svg="http://www.w3.org/2000/svg"
+        xmlns:html="http://www.w3.org/1999/xhtml"
+        xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        onload="gBrowserInit.onLoad()" onunload="gBrowserInit.onUnload()" onclose="return WindowIsClosing();"
+        title="&mainWindow.title;"
+        title_normal="&mainWindow.title;"
+#ifdef XP_MACOSX
+        title_privatebrowsing="&mainWindow.title;&mainWindow.titlemodifiermenuseparator;&mainWindow.titlePrivateBrowsingSuffix;"
+        titledefault="&mainWindow.title;"
+        titlemodifier=""
+        titlemodifier_normal=""
+        titlemodifier_privatebrowsing="&mainWindow.titlePrivateBrowsingSuffix;"
+#else
+        title_privatebrowsing="&mainWindow.titlemodifier; &mainWindow.titlePrivateBrowsingSuffix;"
+        titlemodifier="&mainWindow.titlemodifier;"
+        titlemodifier_normal="&mainWindow.titlemodifier;"
+        titlemodifier_privatebrowsing="&mainWindow.titlemodifier; &mainWindow.titlePrivateBrowsingSuffix;"
+#endif
+#ifdef CAN_DRAW_IN_TITLEBAR
+#ifdef XP_WIN
+        chromemargin="0,2,2,2"
+#else
+        chromemargin="0,-1,-1,-1"
+#endif
+        tabsintitlebar="true"
+#endif
+        titlemenuseparator="&mainWindow.titlemodifiermenuseparator;"
+        lightweightthemes="true"
+        windowtype="navigator:browser"
+        macanimationtype="document"
+        screenX="4" screenY="4"
+        fullscreenbutton="true"
+        sizemode="normal"
+        retargetdocumentfocus="urlbar"
+        persist="screenX screenY width height sizemode">
+
+# All JS files which are not content (only) dependent that browser.xul
+# wishes to include *must* go into the global-scripts.inc file
+# so that they can be shared by macBrowserOverlay.xul.
+#include global-scripts.inc
+
+<script type="application/javascript">
+  Services.scriptloader.loadSubScript("chrome://global/content/contentAreaUtils.js", this);
+</script>
+
+# All sets except for popupsets (commands, keys, stringbundles and broadcasters) *must* go into the
+# browser-sets.inc file for sharing with hiddenWindow.xul.
+#define FULL_BROWSER_WINDOW
+#include browser-sets.inc
+#undef FULL_BROWSER_WINDOW
+
+  <popupset id="mainPopupSet">
+    <menupopup id="tabContextMenu"
+               onpopupshowing="if (event.target == this) TabContextMenu.updateContextMenu(this);"
+               onpopuphidden="if (event.target == this) TabContextMenu.contextTab = null;">
+      <menuitem id="context_reloadTab" label="&reloadTab.label;" accesskey="&reloadTab.accesskey;"
+                oncommand="gBrowser.reloadTab(TabContextMenu.contextTab);"/>
+      <menuitem id="context_toggleMuteTab" oncommand="TabContextMenu.contextTab.toggleMuteAudio();"/>
+      <menuseparator/>
+      <menuitem id="context_pinTab" label="&pinTab.label;"
+                accesskey="&pinTab.accesskey;"
+                oncommand="gBrowser.pinTab(TabContextMenu.contextTab);"/>
+      <menuitem id="context_unpinTab" label="&unpinTab.label;" hidden="true"
+                accesskey="&unpinTab.accesskey;"
+                oncommand="gBrowser.unpinTab(TabContextMenu.contextTab);"/>
+      <menuitem id="context_duplicateTab" label="&duplicateTab.label;"
+                accesskey="&duplicateTab.accesskey;"
+                oncommand="duplicateTabIn(TabContextMenu.contextTab, 'tab');"/>
+      <menuitem id="context_openTabInWindow" label="&moveToNewWindow.label;"
+                accesskey="&moveToNewWindow.accesskey;"
+                tbattr="tabbrowser-multiple"
+                oncommand="gBrowser.replaceTabWithWindow(TabContextMenu.contextTab);"/>
+      <menuseparator id="context_sendTabToDevice_separator"/>
+      <menu id="context_sendTabToDevice" label="&sendTabToDevice.label;"
+            accesskey="&sendTabToDevice.accesskey;">
+        <menupopup id="context_sendTabToDevicePopupMenu"
+                   onpopupshowing="gSync.populateSendTabToDevicesMenu(event.target, TabContextMenu.contextTab.linkedBrowser.currentURI.spec, TabContextMenu.contextTab.linkedBrowser.contentTitle);"/>
+      </menu>
+      <menuseparator/>
+      <menuitem id="context_reloadAllTabs" label="&reloadAllTabs.label;" accesskey="&reloadAllTabs.accesskey;"
+                tbattr="tabbrowser-multiple-visible"
+                oncommand="gBrowser.reloadAllTabs();"/>
+      <menuitem id="context_bookmarkAllTabs"
+                label="&bookmarkAllTabs.label;"
+                accesskey="&bookmarkAllTabs.accesskey;"
+                command="Browser:BookmarkAllTabs"/>
+      <menuitem id="context_closeTabsToTheEnd" label="&closeTabsToTheEnd.label;" accesskey="&closeTabsToTheEnd.accesskey;"
+                oncommand="gBrowser.removeTabsToTheEndFrom(TabContextMenu.contextTab, {animate: true});"/>
+      <menuitem id="context_closeOtherTabs" label="&closeOtherTabs.label;" accesskey="&closeOtherTabs.accesskey;"
+                oncommand="gBrowser.removeAllTabsBut(TabContextMenu.contextTab);"/>
+      <menuseparator/>
+      <menuitem id="context_undoCloseTab"
+                label="&undoCloseTab.label;"
+                accesskey="&undoCloseTab.accesskey;"
+                observes="History:UndoCloseTab"/>
+      <menuitem id="context_closeTab" label="&closeTab.label;" accesskey="&closeTab.accesskey;"
+                oncommand="gBrowser.removeTab(TabContextMenu.contextTab, { animate: true });"/>
+    </menupopup>
+
+    <!-- bug 415444/582485: event.stopPropagation is here for the cloned version
+         of this menupopup -->
+    <menupopup id="backForwardMenu"
+               onpopupshowing="return FillHistoryMenu(event.target);"
+               oncommand="gotoHistoryIndex(event); event.stopPropagation();"
+               onclick="checkForMiddleClick(this, event);"/>
+    <tooltip id="aHTMLTooltip" page="true"/>
+    <tooltip id="remoteBrowserTooltip"/>
+
+    <!-- for search and content formfill/pw manager -->
+
+    <panel type="autocomplete-richlistbox"
+           id="PopupAutoComplete"
+           noautofocus="true"
+           hidden="true"
+           overflowpadding="4"
+           norolluponanchor="true"
+           nomaxresults="true" />
+
+    <!-- for search with one-off buttons -->
+    <panel type="autocomplete" id="PopupSearchAutoComplete" noautofocus="true" hidden="true"/>
+
+    <!-- for url bar autocomplete -->
+    <panel type="autocomplete-richlistbox"
+           id="PopupAutoCompleteRichResult"
+           noautofocus="true"
+           hidden="true"
+           flip="none"
+           level="parent"
+           overflowpadding="15" />
+
+   <!-- for date/time picker. consumeoutsideclicks is set to never, so that
+        clicks on the anchored input box are never consumed. -->
+    <panel id="DateTimePickerPanel"
+           type="arrow"
+           hidden="true"
+           orient="vertical"
+           noautofocus="true"
+           norolluponanchor="true"
+           consumeoutsideclicks="never"
+           level="parent"
+           tabspecific="true">
+    </panel>
+
+    <!-- for select dropdowns. The menupopup is what shows the list of options,
+         and the popuponly menulist makes things like the menuactive attributes
+         work correctly on the menupopup. ContentSelectDropdown expects the
+         popuponly menulist to be its immediate parent. -->
+    <menulist popuponly="true" id="ContentSelectDropdown" hidden="true">
+      <menupopup rolluponmousewheel="true"
+                 activateontab="true" position="after_start"
+                 level="parent"
+#ifdef XP_WIN
+                 consumeoutsideclicks="false" ignorekeys="shortcuts"
+#endif
+        />
+    </menulist>
+
+    <!-- for invalid form error message -->
+    <panel id="invalid-form-popup" type="arrow" orient="vertical" noautofocus="true" hidden="true" level="parent">
+      <description/>
+    </panel>
+
+    <panel id="editBookmarkPanel"
+           type="arrow"
+           orient="vertical"
+           ignorekeys="true"
+           hidden="true"
+           tabspecific="true"
+           onpopupshown="StarUI.panelShown(event);"
+           aria-labelledby="editBookmarkPanelTitle">
+      <row id="editBookmarkPanelHeader" align="center" hidden="true">
+        <vbox align="center">
+          <image id="editBookmarkPanelStarIcon"/>
+        </vbox>
+        <vbox>
+          <label id="editBookmarkPanelTitle"/>
+          <description id="editBookmarkPanelDescription"/>
+        </vbox>
+      </row>
+      <vbox id="editBookmarkPanelContent" flex="1" hidden="true"/>
+      <hbox id="editBookmarkPanelBottomButtons" pack="end">
+#ifdef XP_UNIX
+        <button id="editBookmarkPanelDoneButton"
+                class="editBookmarkPanelBottomButton"
+                label="&editBookmark.done.label;"
+                default="true"
+                oncommand="StarUI.panel.hidePopup();"/>
+        <button id="editBookmarkPanelRemoveButton"
+                class="editBookmarkPanelBottomButton"
+                oncommand="StarUI.removeBookmarkButtonCommand();"
+                accesskey="&editBookmark.removeBookmark.accessKey;"/>
+#else
+        <button id="editBookmarkPanelRemoveButton"
+                class="editBookmarkPanelBottomButton"
+                oncommand="StarUI.removeBookmarkButtonCommand();"
+                accesskey="&editBookmark.removeBookmark.accessKey;"/>
+        <button id="editBookmarkPanelDoneButton"
+                class="editBookmarkPanelBottomButton"
+                label="&editBookmark.done.label;"
+                default="true"
+                oncommand="StarUI.panel.hidePopup();"/>
+#endif
+      </hbox>
+    </panel>
+
+    <!-- UI tour experience -->
+    <panel id="UITourTooltip"
+           type="arrow"
+           hidden="true"
+           noautofocus="true"
+           noautohide="true"
+           align="start"
+           orient="vertical"
+           role="alert">
+     <vbox>
+      <hbox id="UITourTooltipBody">
+        <image id="UITourTooltipIcon"/>
+        <vbox flex="1">
+          <hbox id="UITourTooltipTitleContainer">
+            <label id="UITourTooltipTitle" flex="1"/>
+            <toolbarbutton id="UITourTooltipClose" class="close-icon"
+                           tooltiptext="&uiTour.infoPanel.close;"/>
+          </hbox>
+          <description id="UITourTooltipDescription" flex="1"/>
+        </vbox>
+      </hbox>
+      <hbox id="UITourTooltipButtons" flex="1" align="center"/>
+     </vbox>
+    </panel>
+    <!-- type="default" forces frames to be created so that the panel's size can be determined -->
+    <panel id="UITourHighlightContainer"
+           type="default"
+           hidden="true"
+           noautofocus="true"
+           noautohide="true"
+           flip="none"
+           consumeoutsideclicks="false"
+           mousethrough="always">
+      <box id="UITourHighlight"></box>
+    </panel>
+
+    <panel id="sidebarMenu-popup"
+           class="cui-widget-panel"
+           role="group"
+           type="arrow"
+           hidden="true"
+           flip="slide"
+           orient="vertical"
+           position="bottomcenter topleft">
+      <toolbarbutton id="sidebar-switcher-bookmarks"
+                     class="subviewbutton subviewbutton-iconic"
+                     key="viewBookmarksSidebarKb"
+                     observes="viewBookmarksSidebar"
+                     oncommand="SidebarUI.show('viewBookmarksSidebar');">
+         <observes element="viewBookmarksSidebar" attribute="checked"/>
+       </toolbarbutton>
+      <toolbarbutton id="sidebar-switcher-history"
+                     label="&historyButton.label;"
+                     class="subviewbutton subviewbutton-iconic"
+                     key="key_gotoHistory"
+                     observes="viewHistorySidebar"
+                     oncommand="SidebarUI.show('viewHistorySidebar');">
+         <observes element="viewHistorySidebar" attribute="checked"/>
+       </toolbarbutton>
+      <toolbarbutton id="sidebar-switcher-tabs"
+                     label="&syncedTabs.sidebar.label;"
+                     class="subviewbutton subviewbutton-iconic"
+                     observes="viewTabsSidebar"
+                     oncommand="SidebarUI.show('viewTabsSidebar');">
+         <observes element="viewTabsSidebar" attribute="checked"/>
+       </toolbarbutton>
+      <toolbarseparator/>
+      <vbox id="sidebar-extensions"></vbox>
+      <toolbarseparator/>
+      <toolbarbutton id="sidebar-reverse-position"
+                     class="subviewbutton"
+                     oncommand="SidebarUI.reversePosition()"/>
+      <toolbarseparator/>
+      <toolbarbutton label="&sidebarMenuClose.label;"
+                     class="subviewbutton"
+                     oncommand="SidebarUI.hide()"/>
+    </panel>
+
+    <menupopup id="toolbar-context-menu"
+               onpopupshowing="onViewToolbarsPopupShowing(event, document.getElementById('viewToolbarsMenuSeparator'));">
+      <menuitem oncommand="gCustomizeMode.addToPanel(document.popupNode)"
+                accesskey="&customizeMenu.pinToOverflowMenu.accesskey;"
+                label="&customizeMenu.pinToOverflowMenu.label;"
+                contexttype="toolbaritem"
+                class="customize-context-moveToPanel"/>
+      <menuitem oncommand="gCustomizeMode.removeFromArea(document.popupNode)"
+                accesskey="&customizeMenu.removeFromToolbar.accesskey;"
+                label="&customizeMenu.removeFromToolbar.label;"
+                contexttype="toolbaritem"
+                class="customize-context-removeFromToolbar"/>
+      <menuitem id="toolbar-context-reloadAllTabs"
+                class="toolbaritem-tabsmenu"
+                contexttype="tabbar"
+                oncommand="gBrowser.reloadAllTabs();"
+                label="&toolbarContextMenu.reloadAllTabs.label;"
+                accesskey="&toolbarContextMenu.reloadAllTabs.accesskey;"/>
+      <menuitem id="toolbar-context-bookmarkAllTabs"
+                class="toolbaritem-tabsmenu"
+                contexttype="tabbar"
+                command="Browser:BookmarkAllTabs"
+                label="&toolbarContextMenu.bookmarkAllTabs.label;"
+                accesskey="&toolbarContextMenu.bookmarkAllTabs.accesskey;"/>
+      <menuitem id="toolbar-context-undoCloseTab"
+                class="toolbaritem-tabsmenu"
+                contexttype="tabbar"
+                label="&toolbarContextMenu.undoCloseTab.label;"
+                accesskey="&toolbarContextMenu.undoCloseTab.accesskey;"
+                observes="History:UndoCloseTab"/>
+      <menuseparator/>
+      <menuseparator id="viewToolbarsMenuSeparator"/>
+      <!-- XXXgijs: we're using oncommand handler here to avoid the event being
+                    redirected to the command element, thus preventing
+                    listeners on the menupopup or further up the tree from
+                    seeing the command event pass by. The observes attribute is
+                    here so that the menuitem is still disabled and re-enabled
+                    correctly. -->
+      <menuitem oncommand="gCustomizeMode.enter()"
+                observes="cmd_CustomizeToolbars"
+                class="viewCustomizeToolbar"
+                label="&viewCustomizeToolbar.label;"
+                accesskey="&viewCustomizeToolbar.accesskey;"/>
+    </menupopup>
+
+    <menupopup id="blockedPopupOptions"
+               onpopupshowing="gPopupBlockerObserver.fillPopupList(event);"
+               onpopuphiding="gPopupBlockerObserver.onPopupHiding(event);">
+      <menuitem observes="blockedPopupAllowSite"/>
+      <menuitem observes="blockedPopupEditSettings"/>
+      <menuitem observes="blockedPopupDontShowMessage"/>
+      <menuseparator observes="blockedPopupsSeparator"/>
+    </menupopup>
+
+    <menupopup id="autohide-context"
+           onpopupshowing="FullScreen.getAutohide(this.firstChild);">
+      <menuitem type="checkbox" label="&fullScreenAutohide.label;"
+                accesskey="&fullScreenAutohide.accesskey;"
+                oncommand="FullScreen.setAutohide();"/>
+      <menuseparator/>
+      <menuitem label="&fullScreenExit.label;"
+                accesskey="&fullScreenExit.accesskey;"
+                oncommand="BrowserFullScreen();"/>
+    </menupopup>
+
+    <menupopup id="contentAreaContextMenu" pagemenu="#page-menu-separator"
+               onpopupshowing="if (event.target != this)
+                                 return true;
+                               gContextMenu = new nsContextMenu(this, event.shiftKey);
+                               if (gContextMenu.shouldDisplay)
+                                 updateEditUIVisibility();
+                               return gContextMenu.shouldDisplay;"
+               onpopuphiding="if (event.target != this)
+                                return;
+                              gContextMenu.hiding();
+                              gContextMenu = null;
+                              updateEditUIVisibility();">
+#include browser-context.inc
+    </menupopup>
+
+    <menupopup id="placesContext"/>
+
+    <panel id="ctrlTab-panel" hidden="true" norestorefocus="true" level="top">
+      <hbox>
+        <button class="ctrlTab-preview" flex="1"/>
+        <button class="ctrlTab-preview" flex="1"/>
+        <button class="ctrlTab-preview" flex="1"/>
+        <button class="ctrlTab-preview" flex="1"/>
+        <button class="ctrlTab-preview" flex="1"/>
+        <button class="ctrlTab-preview" flex="1"/>
+      </hbox>
+      <hbox pack="center">
+        <button id="ctrlTab-showAll" class="ctrlTab-preview" noicon="true"/>
+      </hbox>
+    </panel>
+
+    <panel id="pageActionPanel"
+           class="cui-widget-panel"
+           role="group"
+           type="arrow"
+           hidden="true"
+           flip="slide"
+           photon="true"
+           position="bottomcenter topright"
+           tabspecific="true"
+           noautofocus="true"
+           copyURL-title="&pageAction.copyLink.label;"
+           emailLink-title="&emailPageCmd.label;"
+           sendToDevice-title="&pageAction.sendTabToDevice.label;"
+           sendToDevice-notReadyTitle="&sendToDevice.syncNotReady.label;">
+      <photonpanelmultiview id="pageActionPanelMultiView"
+                            mainViewId="pageActionPanelMainView"
+                            viewCacheId="appMenu-viewCache">
+        <panelview id="pageActionPanelMainView"
+                   context="pageActionContextMenu"
+                   class="PanelUI-subView">
+          <vbox class="panel-subview-body"/>
+        </panelview>
+      </photonpanelmultiview>
+    </panel>
+    <panel id="pageActionFeedback"
+           role="alert"
+           type="arrow"
+           hidden="true"
+           flip="slide"
+           position="bottomcenter topright"
+           tabspecific="true"
+           noautofocus="true"
+           copyURLFeedback="&copyURLFeedback.label;"
+           sendToDeviceFeedback="&sendToDeviceFeedback.label;">
+      <hbox id="pageActionFeedbackAnimatableBox">
+        <image id="pageActionFeedbackAnimatableImage"/>
+      </hbox>
+      <label id="pageActionFeedbackMessage"/>
+    </panel>
+
+    <menupopup id="pageActionContextMenu"
+               onpopupshowing="BrowserPageActions.onContextMenuShowing(event, this);">
+      <menuitem class="pageActionContextMenuItem builtInUnpinned"
+                label="&pageAction.addToUrlbar.label;"
+                oncommand="BrowserPageActions.togglePinningForContextAction();"/>
+      <menuitem class="pageActionContextMenuItem builtInPinned"
+                label="&pageAction.removeFromUrlbar.label;"
+                oncommand="BrowserPageActions.togglePinningForContextAction();"/>
+      <menuitem class="pageActionContextMenuItem extensionUnpinned"
+                label="&pageAction.allowInUrlbar.label;"
+                oncommand="BrowserPageActions.togglePinningForContextAction();"/>
+      <menuitem class="pageActionContextMenuItem extensionPinned"
+                label="&pageAction.disallowInUrlbar.label;"
+                oncommand="BrowserPageActions.togglePinningForContextAction();"/>
+      <menuseparator class="pageActionContextMenuItem extensionPinned extensionUnpinned"/>
+      <menuitem class="pageActionContextMenuItem extensionPinned extensionUnpinned"
+                label="&pageAction.manageExtension.label;"
+                oncommand="BrowserPageActions.openAboutAddonsForContextAction();"/>
+    </menupopup>
+
+    <!-- Bookmarks and history tooltip -->
+    <tooltip id="bhTooltip"/>
+
+    <tooltip id="tabbrowser-tab-tooltip" onpopupshowing="gBrowser.createTooltip(event);"/>
+
+    <tooltip id="back-button-tooltip">
+      <label class="tooltip-label" value="&backButton.tooltip;"/>
+#ifdef XP_MACOSX
+      <label class="tooltip-label" value="&backForwardButtonMenuMac.tooltip;"/>
+#else
+      <label class="tooltip-label" value="&backForwardButtonMenu.tooltip;"/>
+#endif
+    </tooltip>
+
+    <tooltip id="forward-button-tooltip">
+      <label class="tooltip-label" value="&forwardButton.tooltip;"/>
+#ifdef XP_MACOSX
+      <label class="tooltip-label" value="&backForwardButtonMenuMac.tooltip;"/>
+#else
+      <label class="tooltip-label" value="&backForwardButtonMenu.tooltip;"/>
+#endif
+    </tooltip>
+
+#include popup-notifications.inc
+
+#include ../../components/customizableui/content/panelUI.inc.xul
+#include ../../components/controlcenter/content/panel.inc.xul
+
+    <hbox id="downloads-animation-container" mousethrough="always">
+      <vbox id="downloads-notification-anchor" hidden="true">
+        <vbox id="downloads-indicator-notification"/>
+      </vbox>
+    </hbox>
+
+    <hbox id="bookmarked-notification-container" mousethrough="always">
+      <vbox id="bookmarked-notification-anchor">
+        <vbox id="bookmarked-notification"/>
+      </vbox>
+      <vbox id="bookmarked-notification-dropmarker-anchor">
+        <image id="bookmarked-notification-dropmarker-icon"/>
+      </vbox>
+    </hbox>
+
+    <tooltip id="dynamic-shortcut-tooltip"
+             onpopupshowing="UpdateDynamicShortcutTooltipText(this);"/>
+
+    <menupopup id="SyncedTabsSidebarContext">
+      <menuitem label="&syncedTabs.context.open.label;"
+                accesskey="&syncedTabs.context.open.accesskey;"
+                id="syncedTabsOpenSelected" where="current"/>
+      <menuitem label="&syncedTabs.context.openInNewTab.label;"
+                accesskey="&syncedTabs.context.openInNewTab.accesskey;"
+                id="syncedTabsOpenSelectedInTab" where="tab"/>
+      <menuitem label="&syncedTabs.context.openInNewWindow.label;"
+                accesskey="&syncedTabs.context.openInNewWindow.accesskey;"
+                id="syncedTabsOpenSelectedInWindow" where="window"/>
+      <menuitem label="&syncedTabs.context.openInNewPrivateWindow.label;"
+                accesskey="&syncedTabs.context.openInNewPrivateWindow.accesskey;"
+                id="syncedTabsOpenSelectedInPrivateWindow" where="window" private="true"/>
+      <menuseparator/>
+      <menuitem label="&syncedTabs.context.bookmarkSingleTab.label;"
+                accesskey="&syncedTabs.context.bookmarkSingleTab.accesskey;"
+                id="syncedTabsBookmarkSelected"/>
+      <menuitem label="&syncedTabs.context.copy.label;"
+                accesskey="&syncedTabs.context.copy.accesskey;"
+                id="syncedTabsCopySelected"/>
+      <menuseparator/>
+      <menuitem label="&syncedTabs.context.openAllInTabs.label;"
+                accesskey="&syncedTabs.context.openAllInTabs.accesskey;"
+                id="syncedTabsOpenAllInTabs"/>
+      <menuitem label="&syncedTabs.context.managedevices.label;"
+                accesskey="&syncedTabs.context.managedevices.accesskey;"
+                id="syncedTabsManageDevices"
+                oncommand="gSync.openDevicesManagementPage('syncedtabs-sidebar');"/>
+      <menuitem label="&syncSyncNowItem.label;"
+                accesskey="&syncSyncNowItem.accesskey;"
+                id="syncedTabsRefresh"/>
+    </menupopup>
+    <menupopup id="SyncedTabsSidebarTabsFilterContext"
+               class="textbox-contextmenu">
+      <menuitem label="&undoCmd.label;"
+                accesskey="&undoCmd.accesskey;"
+                cmd="cmd_undo"/>
+      <menuseparator/>
+      <menuitem label="&cutCmd.label;"
+                accesskey="&cutCmd.accesskey;"
+                cmd="cmd_cut"/>
+      <menuitem label="&copyCmd.label;"
+                accesskey="&copyCmd.accesskey;"
+                cmd="cmd_copy"/>
+      <menuitem label="&pasteCmd.label;"
+                accesskey="&pasteCmd.accesskey;"
+                cmd="cmd_paste"/>
+      <menuitem label="&deleteCmd.label;"
+                accesskey="&deleteCmd.accesskey;"
+                cmd="cmd_delete"/>
+      <menuseparator/>
+      <menuitem label="&selectAllCmd.label;"
+                accesskey="&selectAllCmd.accesskey;"
+                cmd="cmd_selectAll"/>
+      <menuseparator/>
+      <menuitem label="&syncSyncNowItem.label;"
+                accesskey="&syncSyncNowItem.accesskey;"
+                id="syncedTabsRefreshFilter"/>
+    </menupopup>
+  </popupset>
+  <box id="appMenu-viewCache" hidden="true"/>
+
+#ifdef CAN_DRAW_IN_TITLEBAR
+<vbox id="titlebar">
+  <hbox id="titlebar-content">
+    <spacer id="titlebar-spacer" flex="1"/>
+    <hbox id="titlebar-buttonbox-container">
+      <hbox id="titlebar-buttonbox">
+        <toolbarbutton class="titlebar-button" id="titlebar-min" oncommand="window.minimize();"/>
+        <toolbarbutton class="titlebar-button" id="titlebar-max" oncommand="onTitlebarMaxClick();"/>
+        <toolbarbutton class="titlebar-button" id="titlebar-close" command="cmd_closeWindow"/>
+      </hbox>
+    </hbox>
+#ifdef XP_MACOSX
+    <!-- OS X does not natively support RTL for its titlebar items, so we prevent this secondary
+         buttonbox from reversing order in RTL by forcing an LTR direction. -->
+    <hbox id="titlebar-secondary-buttonbox" dir="ltr">
+      <button class="accessibility-indicator" tooltiptext="&accessibilityIndicator.tooltip;" aria-live="polite"/>
+      <hbox class="private-browsing-indicator"/>
+      <hbox id="titlebar-fullscreen-button"/>
+    </hbox>
+#endif
+  </hbox>
+</vbox>
+#endif
+
+<deck flex="1" id="tab-view-deck">
+<vbox flex="1" id="browser-panel">
+
+  <toolbox id="navigator-toolbox" mode="icons">
+    <!-- Menu -->
+    <toolbar type="menubar" id="toolbar-menubar" class="chromeclass-menubar" customizable="true"
+             mode="icons" iconsize="small"
+#ifdef MENUBAR_CAN_AUTOHIDE
+             toolbarname="&menubarCmd.label;"
+             accesskey="&menubarCmd.accesskey;"
+             autohide="true"
+#endif
+             context="toolbar-context-menu">
+      <toolbaritem id="menubar-items" align="center">
+# The entire main menubar is placed into browser-menubar.inc, so that it can be shared by
+# hiddenWindow.xul.
+#include browser-menubar.inc
+      </toolbaritem>
+
+#ifdef CAN_DRAW_IN_TITLEBAR
+#ifndef XP_MACOSX
+      <hbox class="titlebar-placeholder" type="caption-buttons" ordinal="1000"
+            persist="width"
+            skipintoolbarset="true"/>
+#endif
+#endif
+    </toolbar>
+
+    <toolbar id="TabsToolbar"
+             fullscreentoolbar="true"
+             customizable="true"
+             mode="icons"
+             iconsize="small"
+             aria-label="&tabsToolbar.label;"
+             context="toolbar-context-menu"
+             collapsed="true">
+
+#ifdef CAN_DRAW_IN_TITLEBAR
+      <hbox class="titlebar-placeholder" type="pre-tabs"
+            skipintoolbarset="true"/>
+#endif
+
+      <tabs id="tabbrowser-tabs"
+            tabbrowser="content"
+            flex="1"
+            setfocus="false"
+            tooltip="tabbrowser-tab-tooltip"
+            stopwatchid="FX_TAB_CLICK_MS">
+        <tab class="tabbrowser-tab" selected="true" visuallyselected="true" fadein="true"/>
+      </tabs>
+
+      <toolbarbutton id="new-tab-button"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&tabCmd.label;"
+                     command="cmd_newNavigatorTab"
+                     onclick="checkForMiddleClick(this, event);"
+                     tooltip="dynamic-shortcut-tooltip"
+                     ondrop="newTabButtonObserver.onDrop(event)"
+                     ondragover="newTabButtonObserver.onDragOver(event)"
+                     ondragenter="newTabButtonObserver.onDragOver(event)"
+                     ondragexit="newTabButtonObserver.onDragExit(event)"
+                     cui-areatype="toolbar"
+                     removable="true"/>
+
+      <toolbarbutton id="alltabs-button"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional tabs-alltabs-button"
+                     type="menu"
+                     label="&listAllTabs.label;"
+                     tooltiptext="&listAllTabs.label;"
+                     removable="false">
+        <menupopup id="alltabs-popup"
+                   position="after_end">
+          <menuitem id="alltabs_undoCloseTab"
+                    key="key_undoCloseTab"
+                    label="&undoCloseTab.label;"
+                    observes="History:UndoCloseTab"/>
+          <menuseparator id="alltabs-popup-separator-1"/>
+          <menu id="alltabs_containersTab"
+                label="&newUserContext.label;">
+            <menupopup id="alltabs_containersMenuTab" />
+          </menu>
+          <menuseparator id="alltabs-popup-separator-2"/>
+        </menupopup>
+      </toolbarbutton>
+
+#ifdef CAN_DRAW_IN_TITLEBAR
+      <hbox class="titlebar-placeholder" type="post-tabs"
+            ordinal="1000"
+            skipintoolbarset="true"/>
+#endif
+
+      <button class="accessibility-indicator" tooltiptext="&accessibilityIndicator.tooltip;"
+              ordinal="1000"
+              aria-live="polite" skipintoolbarset="true"/>
+      <hbox class="private-browsing-indicator" skipintoolbarset="true"
+            ordinal="1000"/>
+#ifdef CAN_DRAW_IN_TITLEBAR
+      <hbox class="titlebar-placeholder" type="caption-buttons"
+            persist="width"
+#ifndef XP_MACOSX
+            ordinal="1000"
+#endif
+            skipintoolbarset="true"/>
+
+#ifdef XP_MACOSX
+      <hbox class="titlebar-placeholder" type="fullscreen-button"
+            persist="width"
+            skipintoolbarset="true"/>
+#endif
+#endif
+    </toolbar>
+
+    <toolbar id="nav-bar"
+             aria-label="&navbarCmd.label;"
+             fullscreentoolbar="true" mode="icons" customizable="true"
+             iconsize="small"
+             customizationtarget="nav-bar-customization-target"
+             overflowable="true"
+             overflowbutton="nav-bar-overflow-button"
+             overflowtarget="widget-overflow-list"
+             overflowpanel="widget-overflow"
+             context="toolbar-context-menu">
+
+      <hbox id="nav-bar-customization-target" flex="1">
+        <toolbarbutton id="back-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                       label="&backCmd.label;"
+                       removable="false" overflows="false"
+                       keepbroadcastattributeswhencustomizing="true"
+                       command="Browser:BackOrBackDuplicate"
+                       onclick="checkForMiddleClick(this, event);"
+                       tooltip="back-button-tooltip"
+                       context="backForwardMenu"/>
+        <toolbarbutton id="forward-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                       label="&forwardCmd.label;"
+                       removable="false" overflows="false"
+                       keepbroadcastattributeswhencustomizing="true"
+                       command="Browser:ForwardOrForwardDuplicate"
+                       onclick="checkForMiddleClick(this, event);"
+                       tooltip="forward-button-tooltip"
+                       context="backForwardMenu"/>
+        <toolbaritem id="stop-reload-button" class="chromeclass-toolbar-additional"
+                     title="&reloadCmd.label;"
+                     removable="true" overflows="false">
+          <toolbarbutton id="reload-button" class="toolbarbutton-1"
+                         label="&reloadCmd.label;"
+                         command="Browser:ReloadOrDuplicate"
+                         onclick="checkForMiddleClick(this, event);"
+                         tooltip="dynamic-shortcut-tooltip">
+            <box class="toolbarbutton-animatable-box">
+              <image class="toolbarbutton-animatable-image"/>
+            </box>
+          </toolbarbutton>
+          <toolbarbutton id="stop-button" class="toolbarbutton-1"
+                         label="&stopCmd.label;"
+                         command="Browser:Stop"
+                         tooltip="dynamic-shortcut-tooltip">
+            <box class="toolbarbutton-animatable-box">
+              <image class="toolbarbutton-animatable-image"/>
+            </box>
+          </toolbarbutton>
+        </toolbaritem>
+        <toolbarbutton id="home-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                       removable="true"
+                       label="&homeButton.label;"
+                       ondragover="homeButtonObserver.onDragOver(event)"
+                       ondragenter="homeButtonObserver.onDragOver(event)"
+                       ondrop="homeButtonObserver.onDrop(event)"
+                       ondragexit="homeButtonObserver.onDragExit(event)"
+                       key="goHome"
+                       onclick="BrowserGoHome(event);"
+                       cui-areatype="toolbar"
+                       aboutHomeOverrideTooltip="&abouthome.pageTitle;"/>
+        <toolbarspring cui-areatype="toolbar" class="chromeclass-toolbar-additional"/>
+        <toolbaritem id="urlbar-container" flex="400" persist="width"
+                     removable="false"
+                     class="chromeclass-location" overflows="false">
+            <textbox id="urlbar" flex="1"
+                     placeholder="&urlbar.placeholder2;"
+                     type="autocomplete"
+                     autocompletesearch="unifiedcomplete"
+                     autocompletesearchparam="enable-actions"
+                     autocompletepopup="PopupAutoCompleteRichResult"
+                     completeselectedindex="true"
+                     shrinkdelay="250"
+                     tabscrolling="true"
+                     showcommentcolumn="true"
+                     showimagecolumn="true"
+                     newlines="stripsurroundingwhitespace"
+                     ontextentered="this.handleCommand(param);"
+                     ontextreverted="return this.handleRevert();"
+                     pageproxystate="invalid">
+              <!-- Use onclick instead of normal popup= syntax since the popup
+                   code fires onmousedown, and hence eats our favicon drag events. -->
+              <box id="identity-box" role="button"
+                   align="center"
+                   aria-label="&urlbar.viewSiteInfo.label;"
+                   onclick="gIdentityHandler.handleIdentityButtonEvent(event);"
+                   onkeypress="gIdentityHandler.handleIdentityButtonEvent(event);"
+                   ondragstart="gIdentityHandler.onDragStart(event);">
+                <image id="identity-icon"
+                       consumeanchor="identity-box"
+                       onclick="PageProxyClickHandler(event);"/>
+                <image id="sharing-icon" mousethrough="always"/>
+                <image id="tracking-protection-icon"/>
+                <box id="blocked-permissions-container" align="center">
+                  <image data-permission-id="geo" class="blocked-permission-icon geo-icon" role="button"
+                         tooltiptext="&urlbar.geolocationBlocked.tooltip;"/>
+                  <image data-permission-id="desktop-notification" class="blocked-permission-icon desktop-notification-icon" role="button"
+                         tooltiptext="&urlbar.webNotificationsBlocked.tooltip;"/>
+                  <image data-permission-id="camera" class="blocked-permission-icon camera-icon" role="button"
+                         tooltiptext="&urlbar.cameraBlocked.tooltip;"/>
+                  <image data-permission-id="microphone" class="blocked-permission-icon microphone-icon" role="button"
+                         tooltiptext="&urlbar.microphoneBlocked.tooltip;"/>
+                  <image data-permission-id="screen" class="blocked-permission-icon screen-icon" role="button"
+                         tooltiptext="&urlbar.screenBlocked.tooltip;"/>
+                  <image data-permission-id="persistent-storage" class="blocked-permission-icon persistent-storage-icon" role="button"
+                         tooltiptext="&urlbar.persistentStorageBlocked.tooltip;"/>
+                  <image data-permission-id="popup" class="blocked-permission-icon popup-icon" role="button"
+                         tooltiptext="&urlbar.popupBlocked.tooltip;"/>
+                </box>
+                <box id="notification-popup-box"
+                     hidden="true"
+                     onmouseover="document.getElementById('identity-box').classList.add('no-hover');"
+                     onmouseout="document.getElementById('identity-box').classList.remove('no-hover');"
+                     align="center">
+                  <image id="default-notification-icon" class="notification-anchor-icon" role="button"
+                         tooltiptext="&urlbar.defaultNotificationAnchor.tooltip;"/>
+                  <image id="geo-notification-icon" class="notification-anchor-icon geo-icon" role="button"
+                         tooltiptext="&urlbar.geolocationNotificationAnchor.tooltip;"/>
+                  <image id="addons-notification-icon" class="notification-anchor-icon install-icon" role="button"
+                         tooltiptext="&urlbar.addonsNotificationAnchor.tooltip;"/>
+                  <image id="canvas-notification-icon" class="notification-anchor-icon" role="button"
+                         tooltiptext="&urlbar.canvasNotificationAnchor.tooltip;"/>
+                  <image id="indexedDB-notification-icon" class="notification-anchor-icon indexedDB-icon" role="button"
+                         tooltiptext="&urlbar.indexedDBNotificationAnchor.tooltip;"/>
+                  <image id="password-notification-icon" class="notification-anchor-icon login-icon" role="button"
+                         tooltiptext="&urlbar.passwordNotificationAnchor.tooltip;"/>
+                  <stack id="plugins-notification-icon" class="notification-anchor-icon" role="button" align="center"
+                         tooltiptext="&urlbar.pluginsNotificationAnchor.tooltip;">
+                    <image class="plugin-icon" />
+                    <image id="plugin-icon-badge" />
+                  </stack>
+                  <image id="web-notifications-notification-icon" class="notification-anchor-icon desktop-notification-icon" role="button"
+                         tooltiptext="&urlbar.webNotificationAnchor.tooltip;"/>
+                  <image id="webRTC-shareDevices-notification-icon" class="notification-anchor-icon camera-icon" role="button"
+                         tooltiptext="&urlbar.webRTCShareDevicesNotificationAnchor.tooltip;"/>
+                  <image id="webRTC-shareMicrophone-notification-icon" class="notification-anchor-icon microphone-icon" role="button"
+                         tooltiptext="&urlbar.webRTCShareMicrophoneNotificationAnchor.tooltip;"/>
+                  <image id="webRTC-shareScreen-notification-icon" class="notification-anchor-icon screen-icon" role="button"
+                         tooltiptext="&urlbar.webRTCShareScreenNotificationAnchor.tooltip;"/>
+                  <image id="servicesInstall-notification-icon" class="notification-anchor-icon service-icon" role="button"
+                         tooltiptext="&urlbar.servicesNotificationAnchor.tooltip;"/>
+                  <image id="translate-notification-icon" class="notification-anchor-icon translation-icon" role="button"
+                         tooltiptext="&urlbar.translateNotificationAnchor.tooltip;"/>
+                  <image id="translated-notification-icon" class="notification-anchor-icon translation-icon in-use" role="button"
+                         tooltiptext="&urlbar.translatedNotificationAnchor.tooltip;"/>
+                  <image id="eme-notification-icon" class="notification-anchor-icon drm-icon" role="button"
+                         tooltiptext="&urlbar.emeNotificationAnchor.tooltip;"/>
+                  <image id="persistent-storage-notification-icon" class="notification-anchor-icon persistent-storage-icon" role="button"
+                         tooltiptext="&urlbar.persistentStorageNotificationAnchor.tooltip;"/>
+                </box>
+                <image id="connection-icon"/>
+                <image id="extension-icon"/>
+                <image id="remote-control-icon"
+                       tooltiptext="&urlbar.remoteControlNotificationAnchor.tooltip;"/>
+                <hbox id="identity-icon-labels">
+                  <label id="identity-icon-label" class="plain" flex="1"/>
+                  <label id="identity-icon-country-label" class="plain"/>
+                </hbox>
+              </box>
+              <box id="urlbar-display-box" align="center">
+                <label id="switchtab" class="urlbar-display urlbar-display-switchtab" value="&urlbar.switchToTab.label;"/>
+                <label id="extension" class="urlbar-display urlbar-display-extension" value="&urlbar.extension.label;"/>
+              </box>
+              <hbox id="page-action-buttons" context="pageActionContextMenu">
+                <hbox id="userContext-icons" hidden="true">
+                  <label id="userContext-label"/>
+                  <image id="userContext-indicator"/>
+                </hbox>
+                <image id="reader-mode-button"
+                       class="urlbar-icon urlbar-page-action"
+                       role="button"
+                       hidden="true"
+                       onclick="ReaderParent.buttonClick(event);"/>
+                <toolbarbutton id="urlbar-zoom-button"
+                       onclick="FullZoom.reset();"
+                       tooltip="dynamic-shortcut-tooltip"
+                       hidden="true"/>
+                <box id="pageActionSeparator" class="urlbar-page-action"/>
+                <image id="pageActionButton"
+                       class="urlbar-icon urlbar-page-action"
+                       role="button"
+                       tooltiptext="&pageActionButton.tooltip;"
+                       onmousedown="BrowserPageActions.mainButtonClicked(event);"/>
+                <hbox id="star-button-box"
+                      hidden="true"
+                      class="urlbar-icon-wrapper urlbar-page-action"
+                      onclick="BrowserPageActions.doCommandForAction(PageActions.actionForID('bookmark'), event, this);">
+                  <image id="star-button"
+                         class="urlbar-icon"
+                         role="button"
+                         observes="bookmarkThisPageBroadcaster"/>
+                  <hbox id="star-button-animatable-box">
+                    <image id="star-button-animatable-image"
+                           role="presentation"
+                           observes="bookmarkThisPageBroadcaster"/>
+                  </hbox>
+                </hbox>
+              </hbox>
+            </textbox>
+        </toolbaritem>
+
+        <toolbarspring cui-areatype="toolbar" class="chromeclass-toolbar-additional"/>
+
+        <!-- This is a placeholder for the Downloads Indicator.  It is visible
+             during the customization of the toolbar, in the palette, and before
+             the Downloads Indicator overlay is loaded. -->
+        <toolbarbutton id="downloads-button"
+                       class="toolbarbutton-1 chromeclass-toolbar-additional badged-button"
+                       key="key_openDownloads"
+                       onmousedown="DownloadsIndicatorView.onCommand(event);"
+                       ondrop="DownloadsIndicatorView.onDrop(event);"
+                       ondragover="DownloadsIndicatorView.onDragOver(event);"
+                       ondragenter="DownloadsIndicatorView.onDragOver(event);"
+                       label="&downloads.label;"
+                       removable="true"
+                       overflows="false"
+                       cui-areatype="toolbar"
+                       hidden="true"
+                       tooltip="dynamic-shortcut-tooltip"/>
+
+        <toolbarbutton id="library-button" class="toolbarbutton-1 chromeclass-toolbar-additional subviewbutton-nav"
+                       removable="true"
+                       onmousedown="PanelUI.showSubView('appMenu-libraryView', this, null, event);"
+                       closemenu="none"
+                       cui-areatype="toolbar"
+                       tooltiptext="&libraryButton.tooltip;"
+                       label="&places.library.title;"/>
+
+      </hbox>
+
+      <toolbarbutton id="nav-bar-overflow-button"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional overflow-button"
+                     skipintoolbarset="true"
+                     tooltiptext="&navbarOverflow.label;">
+        <box class="toolbarbutton-animatable-box">
+          <image class="toolbarbutton-animatable-image"/>
+        </box>
+      </toolbarbutton>
+
+      <toolbaritem id="PanelUI-button"
+                   removable="false">
+        <toolbarbutton id="PanelUI-menu-button"
+                       class="toolbarbutton-1 badged-button"
+                       consumeanchor="PanelUI-button"
+                       label="&brandShortName;"
+                       tooltiptext="&appmenu.tooltip;"/>
+      </toolbaritem>
+
+      <hbox id="window-controls" hidden="true" pack="end" skipintoolbarset="true"
+            ordinal="1000">
+        <toolbarbutton id="minimize-button"
+                       tooltiptext="&fullScreenMinimize.tooltip;"
+                       oncommand="window.minimize();"/>
+
+        <toolbarbutton id="restore-button"
+#ifdef XP_MACOSX
+# Prior to 10.7 there wasn't a native fullscreen button so we use #restore-button
+# to exit fullscreen and want it to behave like other toolbar buttons.
+                       class="toolbarbutton-1"
+#endif
+                       tooltiptext="&fullScreenRestore.tooltip;"
+                       oncommand="BrowserFullScreen();"/>
+
+        <toolbarbutton id="close-button"
+                       tooltiptext="&fullScreenClose.tooltip;"
+                       oncommand="BrowserTryToCloseWindow();"/>
+      </hbox>
+    </toolbar>
+
+    <toolbarset id="customToolbars" context="toolbar-context-menu"/>
+
+    <toolbar id="PersonalToolbar"
+             mode="icons" iconsize="small"
+             class="chromeclass-directories"
+             context="toolbar-context-menu"
+             toolbarname="&personalbarCmd.label;" accesskey="&personalbarCmd.accesskey;"
+             collapsed="true"
+             customizable="true">
+      <toolbaritem id="personal-bookmarks"
+                   title="&bookmarksToolbarItem.label;"
+                   cui-areatype="toolbar"
+                   removable="true">
+        <toolbarbutton id="bookmarks-toolbar-placeholder"
+                       class="bookmark-item"
+                       label="&bookmarksToolbarItem.label;"/>
+        <toolbarbutton id="bookmarks-toolbar-button"
+                       class="toolbarbutton-1"
+                       flex="1"
+                       label="&bookmarksToolbarItem.label;"
+                       oncommand="PlacesToolbarHelper.onPlaceholderCommand();"/>
+        <hbox flex="1"
+              id="PlacesToolbar"
+              context="placesContext"
+              onmouseup="BookmarksEventHandler.onMouseUp(event);"
+              onclick="BookmarksEventHandler.onClick(event, this._placesView);"
+              oncommand="BookmarksEventHandler.onCommand(event);"
+              tooltip="bhTooltip"
+              popupsinherittooltip="true">
+          <hbox flex="1">
+            <hbox id="PlacesToolbarDropIndicatorHolder" align="center" collapsed="true">
+              <image id="PlacesToolbarDropIndicator"
+                     mousethrough="always"
+                     collapsed="true"/>
+            </hbox>
+            <scrollbox orient="horizontal"
+                       id="PlacesToolbarItems"
+                       flex="1"/>
+            <toolbarbutton type="menu"
+                           id="PlacesChevron"
+                           class="toolbarbutton-1"
+                           mousethrough="never"
+                           collapsed="true"
+                           tooltiptext="&bookmarksToolbarChevron.tooltip;"
+                           onpopupshowing="document.getElementById('PlacesToolbar')
+                                                   ._placesView._onChevronPopupShowing(event);">
+              <menupopup id="PlacesChevronPopup"
+                         placespopup="true"
+                         tooltip="bhTooltip" popupsinherittooltip="true"
+                         context="placesContext"/>
+            </toolbarbutton>
+          </hbox>
+        </hbox>
+      </toolbaritem>
+    </toolbar>
+
+    <toolbarpalette id="BrowserToolbarPalette">
+
+      <toolbarbutton id="print-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+#ifdef XP_MACOSX
+                     command="cmd_print"
+                     tooltip="dynamic-shortcut-tooltip"
+#else
+                     command="cmd_printPreview"
+                     tooltiptext="&printButton.tooltip;"
+#endif
+                     label="&printButton.label;"/>
+
+
+      <toolbarbutton id="new-window-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&newNavigatorCmd.label;"
+                     command="cmd_newNavigator"
+                     tooltip="dynamic-shortcut-tooltip"
+                     ondrop="newWindowButtonObserver.onDrop(event)"
+                     ondragover="newWindowButtonObserver.onDragOver(event)"
+                     ondragenter="newWindowButtonObserver.onDragOver(event)"
+                     ondragexit="newWindowButtonObserver.onDragExit(event)"/>
+
+      <toolbarbutton id="fullscreen-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     observes="View:FullScreen"
+                     type="checkbox"
+                     label="&fullScreenCmd.label;"
+                     tooltip="dynamic-shortcut-tooltip"/>
+
+      <toolbarbutton id="bookmarks-menu-button"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional subviewbutton-nav"
+                     type="menu"
+                     label="&bookmarksMenuButton2.label;"
+                     tooltip="dynamic-shortcut-tooltip"
+                     anchor="dropmarker"
+                     ondragenter="PlacesMenuDNDHandler.onDragEnter(event);"
+                     ondragover="PlacesMenuDNDHandler.onDragOver(event);"
+                     ondragleave="PlacesMenuDNDHandler.onDragLeave(event);"
+                     ondrop="PlacesMenuDNDHandler.onDrop(event);"
+                     oncommand="BookmarkingUI.onCommand(event);">
+        <observes element="bookmarkThisPageBroadcaster" attribute="starred"/>
+        <observes element="bookmarkThisPageBroadcaster" attribute="buttontooltiptext"/>
+        <menupopup id="BMB_bookmarksPopup"
+                   class="cui-widget-panel cui-widget-panelview cui-widget-panelWithFooter PanelUI-subView"
+                   placespopup="true"
+                   context="placesContext"
+                   openInTabs="children"
+                   onmouseup="BookmarksEventHandler.onMouseUp(event);"
+                   oncommand="BookmarksEventHandler.onCommand(event);"
+                   onclick="BookmarksEventHandler.onClick(event, this.parentNode._placesView);"
+                   onpopupshowing="BookmarkingUI.onPopupShowing(event);
+                                   BookmarkingUI.attachPlacesView(event, this);"
+                   tooltip="bhTooltip" popupsinherittooltip="true">
+          <menuitem id="BMB_viewBookmarksSidebar"
+                    class="subviewbutton"
+                    label="&viewBookmarksSidebar2.label;"
+                    type="checkbox"
+                    oncommand="SidebarUI.toggle('viewBookmarksSidebar');">
+            <observes element="viewBookmarksSidebar" attribute="checked"/>
+          </menuitem>
+          <!-- NB: temporary solution for bug 985024, this should go away soon. -->
+          <menuitem id="BMB_bookmarksShowAllTop"
+                    class="menuitem-iconic subviewbutton"
+                    label="&showAllBookmarks2.label;"
+                    command="Browser:ShowAllBookmarks"
+                    key="manBookmarkKb"/>
+          <menuseparator/>
+          <menu id="BMB_bookmarksToolbar"
+                class="menu-iconic bookmark-item subviewbutton"
+                label="&personalbarCmd.label;"
+                container="true">
+            <menupopup id="BMB_bookmarksToolbarPopup"
+                       placespopup="true"
+                       context="placesContext"
+                       onpopupshowing="if (!this.parentNode._placesView)
+                                         new PlacesMenu(event, 'place:folder=TOOLBAR',
+                                                        PlacesUIUtils.getViewForNode(this.parentNode.parentNode).options);">
+              <menuitem id="BMB_viewBookmarksToolbar"
+                        placesanonid="view-toolbar"
+                        toolbarId="PersonalToolbar"
+                        type="checkbox"
+                        oncommand="onViewToolbarCommand(event)"
+                        label="&viewBookmarksToolbar.label;"/>
+              <menuseparator/>
+              <!-- Bookmarks toolbar items -->
+            </menupopup>
+          </menu>
+          <menu id="BMB_unsortedBookmarks"
+                class="menu-iconic bookmark-item subviewbutton"
+                label="&bookmarksMenuButton.other.label;"
+                container="true">
+            <menupopup id="BMB_unsortedBookmarksPopup"
+                       placespopup="true"
+                       context="placesContext"
+                       onpopupshowing="if (!this.parentNode._placesView)
+                                         new PlacesMenu(event, 'place:folder=UNFILED_BOOKMARKS',
+                                                        PlacesUIUtils.getViewForNode(this.parentNode.parentNode).options);"/>
+          </menu>
+          <menu id="BMB_mobileBookmarks"
+                class="menu-iconic bookmark-item subviewbutton"
+                label="&bookmarksMenuButton.mobile.label;"
+                hidden="true"
+                container="true">
+            <menupopup id="BMB_mobileBookmarksPopup"
+                       placespopup="true"
+                       context="placesContext"
+                       onpopupshowing="if (!this.parentNode._placesView)
+                                         new PlacesMenu(event, 'place:folder=MOBILE_BOOKMARKS',
+                                                        PlacesUIUtils.getViewForNode(this.parentNode.parentNode).options);"/>
+          </menu>
+
+          <menuseparator/>
+          <!-- Bookmarks menu items will go here -->
+          <menuitem id="BMB_bookmarksShowAll"
+                    class="subviewbutton panel-subview-footer"
+                    label="&showAllBookmarks2.label;"
+                    command="Browser:ShowAllBookmarks"
+                    key="manBookmarkKb"/>
+        </menupopup>
+      </toolbarbutton>
+
+      <toolbaritem id="search-container"
+                   class="chromeclass-toolbar-additional panel-wide-item"
+                   title="&searchItem.title;"
+                   align="center"
+                   flex="100"
+                   persist="width">
+        <searchbar id="searchbar" flex="1"/>
+      </toolbaritem>
+    </toolbarpalette>
+    <box id="library-animatable-box" class="toolbarbutton-animatable-box">
+      <image class="toolbarbutton-animatable-image"/>
+    </box>
+  </toolbox>
+
+  <hbox id="fullscr-toggler" hidden="true"/>
+
+  <deck id="content-deck" flex="1">
+    <hbox flex="1" id="browser">
+      <vbox id="browser-border-start" hidden="true" layer="true"/>
+      <vbox id="sidebar-box" hidden="true" class="chromeclass-extrachrome">
+        <sidebarheader id="sidebar-header" align="center">
+          <toolbarbutton id="sidebar-switcher-target" flex="1" class="tabbable">
+            <image id="sidebar-icon" consumeanchor="sidebar-switcher-target"/>
+            <label id="sidebar-title" persist="value" crop="end" flex="1" control="sidebar"/>
+            <image id="sidebar-switcher-arrow"/>
+          </toolbarbutton>
+          <image id="sidebar-throbber"/>
+# To ensure the button label's intrinsic width doesn't expand the sidebar
+# if the label is long, the button needs flex=1.
+# To ensure the button doesn't expand unnecessarily for short labels, the
+# spacer should significantly out-flex the button.
+          <spacer flex="1000"/>
+          <toolbarbutton id="sidebar-close" class="close-icon tabbable" tooltiptext="&sidebarCloseButton.tooltip;" oncommand="SidebarUI.hide();"/>
+        </sidebarheader>
+        <browser id="sidebar" flex="1" autoscroll="false" disablehistory="true" disablefullscreen="true"
+                  style="min-width: 14em; width: 18em; max-width: 36em;" tooltip="aHTMLTooltip"/>
+      </vbox>
+
+      <splitter id="sidebar-splitter" class="chromeclass-extrachrome sidebar-splitter" hidden="true"/>
+      <vbox id="appcontent" flex="1">
+        <notificationbox id="high-priority-global-notificationbox" notificationside="top"/>
+        <tabbrowser id="content"
+                    flex="1" contenttooltip="aHTMLTooltip"
+                    tabcontainer="tabbrowser-tabs"
+                    contentcontextmenu="contentAreaContextMenu"
+                    autocompletepopup="PopupAutoComplete"
+                    selectmenulist="ContentSelectDropdown"
+                    datetimepicker="DateTimePickerPanel"/>
+      </vbox>
+      <vbox id="browser-border-end" hidden="true" layer="true"/>
+    </hbox>
+#include ../../components/customizableui/content/customizeMode.inc.xul
+  </deck>
+
+  <html:div id="fullscreen-warning" class="pointerlockfswarning" hidden="true">
+    <html:div class="pointerlockfswarning-domain-text">
+      &fullscreenWarning.beforeDomain.label;
+      <html:span class="pointerlockfswarning-domain"/>
+      &fullscreenWarning.afterDomain.label;
+    </html:div>
+    <html:div class="pointerlockfswarning-generic-text">
+      &fullscreenWarning.generic.label;
+    </html:div>
+    <html:button id="fullscreen-exit-button"
+                 onclick="FullScreen.exitDomFullScreen();">
+#ifdef XP_MACOSX
+            &exitDOMFullscreenMac.button;
+#else
+            &exitDOMFullscreen.button;
+#endif
+    </html:button>
+  </html:div>
+
+  <html:div id="pointerlock-warning" class="pointerlockfswarning" hidden="true">
+    <html:div class="pointerlockfswarning-domain-text">
+      &pointerlockWarning.beforeDomain.label;
+      <html:span class="pointerlockfswarning-domain"/>
+      &pointerlockWarning.afterDomain.label;
+    </html:div>
+    <html:div class="pointerlockfswarning-generic-text">
+      &pointerlockWarning.generic.label;
+    </html:div>
+  </html:div>
+
+  <vbox id="browser-bottombox" layer="true">
+    <notificationbox id="global-notificationbox" notificationside="bottom"/>
+  </vbox>
+
+</vbox>
+# <iframe id="tab-view"> is dynamically appended as the 2nd child of #tab-view-deck.
+#     Introducing the iframe dynamically, as needed, was found to be better than
+#     starting with an empty iframe here in browser.xul from a Ts standpoint.
+</deck>
+
+</window>
diff --git a/browser/base/jar.mn b/browser/base/jar.mn
--- a/browser/base/jar.mn
+++ b/browser/base/jar.mn
@@ -52,16 +52,18 @@ browser.jar:
         content/browser/aboutRobots-icon.png          (content/aboutRobots-icon.png)
         content/browser/aboutRobots-widget-left.png   (content/aboutRobots-widget-left.png)
         content/browser/aboutTabCrashed.css           (content/aboutTabCrashed.css)
         content/browser/aboutTabCrashed.js            (content/aboutTabCrashed.js)
         content/browser/aboutTabCrashed.xhtml         (content/aboutTabCrashed.xhtml)
 *       content/browser/browser.css                   (content/browser.css)
         content/browser/browser.js                    (content/browser.js)
 *       content/browser/browser.xul                   (content/browser.xul)
+*       content/browser/browser-kde.xul               (content/browser-kde.xul)
+%       override chrome://browser/content/browser.xul chrome://browser/content/browser-kde.xul desktop=kde
         content/browser/browser-addons.js             (content/browser-addons.js)
         content/browser/browser-captivePortal.js      (content/browser-captivePortal.js)
         content/browser/browser-ctrlTab.js            (content/browser-ctrlTab.js)
         content/browser/browser-customization.js      (content/browser-customization.js)
         content/browser/browser-data-submission-info-bar.js (content/browser-data-submission-info-bar.js)
         content/browser/browser-compacttheme.js       (content/browser-compacttheme.js)
 #ifndef MOZILLA_OFFICIAL
         content/browser/browser-development-helpers.js (content/browser-development-helpers.js)
diff --git a/browser/components/build/nsModule.cpp b/browser/components/build/nsModule.cpp
--- a/browser/components/build/nsModule.cpp
+++ b/browser/components/build/nsModule.cpp
@@ -8,17 +8,17 @@
 #include "nsBrowserCompsCID.h"
 #include "DirectoryProvider.h"
 
 #if defined(XP_WIN)
 #include "nsWindowsShellService.h"
 #elif defined(XP_MACOSX)
 #include "nsMacShellService.h"
 #elif defined(MOZ_WIDGET_GTK)
-#include "nsGNOMEShellService.h"
+#include "nsUnixShellService.h"
 #endif
 
 #if defined(XP_WIN)
 #include "nsIEHistoryEnumerator.h"
 #endif
 
 #include "rdf.h"
 #include "nsFeedSniffer.h"
@@ -32,18 +32,16 @@ using namespace mozilla::browser;
 
 /////////////////////////////////////////////////////////////////////////////
 
 NS_GENERIC_FACTORY_CONSTRUCTOR(DirectoryProvider)
 #if defined(XP_WIN)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsWindowsShellService)
 #elif defined(XP_MACOSX)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsMacShellService)
-#elif defined(MOZ_WIDGET_GTK)
-NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsGNOMEShellService, Init)
 #endif
 
 #if defined(XP_WIN)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsIEHistoryEnumerator)
 #endif
 
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsFeedSniffer)
 
@@ -64,17 +62,17 @@ NS_DEFINE_NAMED_CID(NS_SHELLSERVICE_CID)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSessionStoreUtils)
 NS_DEFINE_NAMED_CID(NS_SESSIONSTOREUTILS_CID);
 
 static const mozilla::Module::CIDEntry kBrowserCIDs[] = {
     { &kNS_BROWSERDIRECTORYPROVIDER_CID, false, nullptr, DirectoryProviderConstructor },
 #if defined(XP_WIN)
     { &kNS_SHELLSERVICE_CID, false, nullptr, nsWindowsShellServiceConstructor },
 #elif defined(MOZ_WIDGET_GTK)
-    { &kNS_SHELLSERVICE_CID, false, nullptr, nsGNOMEShellServiceConstructor },
+    { &kNS_SHELLSERVICE_CID, false, nullptr, nsUnixShellServiceConstructor },
 #endif
     { &kNS_FEEDSNIFFER_CID, false, nullptr, nsFeedSnifferConstructor },
     { &kNS_BROWSER_ABOUT_REDIRECTOR_CID, false, nullptr, AboutRedirector::Create },
 #if defined(XP_WIN)
     { &kNS_WINIEHISTORYENUMERATOR_CID, false, nullptr, nsIEHistoryEnumeratorConstructor },
 #elif defined(XP_MACOSX)
     { &kNS_SHELLSERVICE_CID, false, nullptr, nsMacShellServiceConstructor },
 #endif
diff --git a/browser/components/preferences/in-content/main.js b/browser/components/preferences/in-content/main.js
--- a/browser/components/preferences/in-content/main.js
+++ b/browser/components/preferences/in-content/main.js
@@ -193,16 +193,23 @@ var gMainPane = {
           this._backoffIndex++ : backoffTimes.length - 1]);
       };
 
       window.setTimeout(() => {
         window.requestIdleCallback(pollForDefaultBrowser);
       }, backoffTimes[this._backoffIndex]);
     }
 
+    var env = Components.classes["@mozilla.org/process/environment;1"]
+      .getService(Components.interfaces.nsIEnvironment);
+    var kde_session = 0;
+    if (env.get('KDE_FULL_SESSION') == "true") {
+      kde_session = 1;
+    }
+
     this.initBrowserContainers();
     this.buildContentProcessCountMenuList();
 
     let performanceSettingsLink = document.getElementById("performanceSettingsLearnMore");
     let performanceSettingsUrl = Services.urlFormatter.formatURLPref("app.support.baseURL") + "performance";
     performanceSettingsLink.setAttribute("href", performanceSettingsUrl);
 
     this.updateDefaultPerformanceSettingsPref();
@@ -898,16 +905,27 @@ var gMainPane = {
       // Reset exponential backoff delay time in order to do visual update in pollForDefaultBrowser.
       this._backoffIndex = 0;
 
       let shellSvc = getShellService();
       if (!shellSvc)
         return;
       try {
         shellSvc.setDefaultBrowser(true, false);
+        if (kde_session == 1) {
+          var shellObj = Components.classes["@mozilla.org/file/local;1"]
+            .createInstance(Components.interfaces.nsILocalFile);
+          shellObj.initWithPath("/usr/bin/kwriteconfig");
+          var process = Components.classes["@mozilla.org/process/util;1"]
+            .createInstance(Components.interfaces.nsIProcess);
+          process.init(shellObj);
+          var args = ["--file", "kdeglobals", "--group", "General", "--key",
+              "BrowserApplication", "firefox"];
+          process.run(false, args, args.length);
+        }
       } catch (ex) {
         Cu.reportError(ex);
         return;
       }
 
       let selectedIndex = shellSvc.isDefaultBrowser(false, true) ? 1 : 0;
       document.getElementById("setDefaultPane").selectedIndex = selectedIndex;
     }
diff --git a/browser/components/shell/moz.build b/browser/components/shell/moz.build
--- a/browser/components/shell/moz.build
+++ b/browser/components/shell/moz.build
@@ -39,16 +39,18 @@ if CONFIG['OS_ARCH'] == 'WINNT':
     ]
 elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
     SOURCES += [
         'nsMacShellService.cpp',
     ]
 elif 'gtk' in CONFIG['MOZ_WIDGET_TOOLKIT']:
     SOURCES += [
         'nsGNOMEShellService.cpp',
+        'nsKDEShellService.cpp',
+        'nsUnixShellService.cpp',
     ]
 
 if SOURCES:
     FINAL_LIBRARY = 'browsercomps'
 
 EXTRA_COMPONENTS += [
     'nsSetDefaultBrowser.js',
     'nsSetDefaultBrowser.manifest',
diff --git a/browser/components/shell/nsKDEShellService.cpp b/browser/components/shell/nsKDEShellService.cpp
new file mode 100644
--- /dev/null
+++ b/browser/components/shell/nsKDEShellService.cpp
@@ -0,0 +1,204 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/ArrayUtils.h"
+
+#include "nsCOMPtr.h"
+#include "nsKDEShellService.h"
+#include "nsShellService.h"
+#include "nsKDEUtils.h"
+#include "nsIPrefService.h"
+#include "nsIProcess.h"
+#include "nsIFile.h"
+#include "nsServiceManagerUtils.h"
+#include "nsComponentManagerUtils.h"
+#include "nsIMutableArray.h"
+#include "nsISupportsPrimitives.h"
+#include "nsArrayUtils.h"
+
+using namespace mozilla;
+
+nsresult
+nsKDEShellService::Init()
+{
+    if( !nsKDEUtils::kdeSupport())
+        return NS_ERROR_NOT_AVAILABLE;
+    return NS_OK;
+}
+
+NS_IMPL_ISUPPORTS(nsKDEShellService, nsIGNOMEShellService, nsIShellService)
+
+NS_IMETHODIMP
+nsKDEShellService::IsDefaultBrowser(bool aStartupCheck,
+                                    bool aForAllTypes,
+                                    bool* aIsDefaultBrowser)
+{
+    *aIsDefaultBrowser = false;
+    if (aStartupCheck)
+        mCheckedThisSession = true;
+
+    nsCOMPtr<nsIMutableArray> command = do_CreateInstance( NS_ARRAY_CONTRACTID );
+    if (!command)
+        return NS_ERROR_FAILURE;
+
+    nsCOMPtr<nsISupportsCString> str = do_CreateInstance( NS_SUPPORTS_CSTRING_CONTRACTID );
+    if (!str)
+        return NS_ERROR_FAILURE;
+
+    str->SetData( NS_LITERAL_CSTRING( "ISDEFAULTBROWSER" ));
+    command->AppendElement( str );
+
+    if( nsKDEUtils::command( command ))
+        *aIsDefaultBrowser = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsKDEShellService::SetDefaultBrowser(bool aClaimAllTypes,
+                                     bool aForAllUsers)
+{
+    nsCOMPtr<nsIMutableArray> command = do_CreateInstance( NS_ARRAY_CONTRACTID );
+    if (!command)
+        return NS_ERROR_FAILURE;
+
+    nsCOMPtr<nsISupportsCString> cmdstr = do_CreateInstance( NS_SUPPORTS_CSTRING_CONTRACTID );
+    nsCOMPtr<nsISupportsCString> paramstr = do_CreateInstance( NS_SUPPORTS_CSTRING_CONTRACTID );
+    if (!cmdstr || !paramstr)
+        return NS_ERROR_FAILURE;
+
+    cmdstr->SetData( NS_LITERAL_CSTRING( "SETDEFAULTBROWSER" ));
+    command->AppendElement( cmdstr );
+
+    paramstr->SetData( aClaimAllTypes ? NS_LITERAL_CSTRING( "ALLTYPES" ) : NS_LITERAL_CSTRING( "NORMAL" ));
+    command->AppendElement( paramstr );
+
+    return nsKDEUtils::command( command ) ? NS_OK : NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsKDEShellService::GetCanSetDesktopBackground(bool* aResult)
+{
+  *aResult = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsKDEShellService::SetDesktopBackground(nsIDOMElement* aElement,
+                                        int32_t aPosition,
+                                        const nsACString& aImageName)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsKDEShellService::GetDesktopBackgroundColor(PRUint32 *aColor)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsKDEShellService::SetDesktopBackgroundColor(PRUint32 aColor)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsKDEShellService::OpenApplication(PRInt32 aApplication)
+{
+    nsCOMPtr<nsIMutableArray> command = do_CreateInstance( NS_ARRAY_CONTRACTID );
+    if (!command)
+        return NS_ERROR_FAILURE;
+
+    nsCOMPtr<nsISupportsCString> str = do_CreateInstance( NS_SUPPORTS_CSTRING_CONTRACTID );
+    if (!str)
+        return NS_ERROR_FAILURE;
+
+    if( aApplication == APPLICATION_MAIL )
+        str->SetData( NS_LITERAL_CSTRING( "OPENMAIL" ));
+    else if( aApplication == APPLICATION_NEWS )
+        str->SetData( NS_LITERAL_CSTRING( "OPENNEWS" ));
+    else
+        return NS_ERROR_NOT_IMPLEMENTED;
+
+    command->AppendElement( str );
+    return nsKDEUtils::command( command ) ? NS_OK : NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsKDEShellService::OpenApplicationWithURI(nsIFile* aApplication, const nsACString& aURI)
+{
+    nsCOMPtr<nsIMutableArray> command = do_CreateInstance( NS_ARRAY_CONTRACTID );
+    if (!command)
+        return NS_ERROR_FAILURE;
+
+    nsCOMPtr<nsISupportsCString> cmdstr = do_CreateInstance( NS_SUPPORTS_CSTRING_CONTRACTID );
+    nsCOMPtr<nsISupportsCString> appstr = do_CreateInstance( NS_SUPPORTS_CSTRING_CONTRACTID );
+    nsCOMPtr<nsISupportsCString> uristr = do_CreateInstance( NS_SUPPORTS_CSTRING_CONTRACTID );
+    if (!cmdstr || !appstr || !uristr)
+        return NS_ERROR_FAILURE;
+
+    cmdstr->SetData( NS_LITERAL_CSTRING( "RUN" ));
+    command->AppendElement( cmdstr );
+    nsAutoCString app;
+    nsresult rv = aApplication->GetNativePath( app );
+    NS_ENSURE_SUCCESS( rv, rv );
+    appstr->SetData( app );
+    command->AppendElement( appstr );
+    uristr->SetData( aURI );
+    command->AppendElement( uristr );
+    return nsKDEUtils::command( command ) ? NS_OK : NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsKDEShellService::GetDefaultFeedReader(nsIFile** _retval)
+{
+    *_retval = nullptr;
+
+    nsCOMPtr<nsIMutableArray> command = do_CreateInstance( NS_ARRAY_CONTRACTID );
+    if( !command )
+        return NS_ERROR_FAILURE;
+
+    nsCOMPtr<nsISupportsCString> str = do_CreateInstance( NS_SUPPORTS_CSTRING_CONTRACTID );
+    if( !str )
+        return NS_ERROR_FAILURE;
+
+    str->SetData( NS_LITERAL_CSTRING( "GETDEFAULTFEEDREADER" ));
+    command->AppendElement( str );
+
+    nsCOMPtr<nsIArray> output;
+    if( !nsKDEUtils::command( command, getter_AddRefs( output ) ) )
+        return NS_ERROR_FAILURE;
+
+    PRUint32 length;
+    output->GetLength( &length );
+    if( length != 1 )
+        return NS_ERROR_FAILURE;
+
+    nsCOMPtr<nsISupportsCString> resstr = do_QueryElementAt( output, 0 );
+    if( !resstr )
+        return NS_ERROR_FAILURE;
+
+    nsAutoCString path;
+    resstr->GetData( path );
+    if (path.IsEmpty())
+        return NS_ERROR_FAILURE;
+
+    nsresult rv;
+    nsCOMPtr<nsIFile> defaultReader =
+        do_CreateInstance("@mozilla.org/file/local;1", &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = defaultReader->InitWithNativePath(path);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    bool exists;
+    rv = defaultReader->Exists(&exists);
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (!exists)
+        return NS_ERROR_FAILURE;
+
+    NS_ADDREF(*_retval = defaultReader);
+    return NS_OK;
+}
diff --git a/browser/components/shell/nsKDEShellService.h b/browser/components/shell/nsKDEShellService.h
new file mode 100644
--- /dev/null
+++ b/browser/components/shell/nsKDEShellService.h
@@ -0,0 +1,30 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nskdeshellservice_h____
+#define nskdeshellservice_h____
+
+#include "nsIGNOMEShellService.h"
+#include "nsString.h"
+#include "mozilla/Attributes.h"
+
+class nsKDEShellService final : public nsIGNOMEShellService
+{
+public:
+  nsKDEShellService() : mCheckedThisSession(false) { }
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIGNOMESHELLSERVICE
+  NS_DECL_NSISHELLSERVICE
+
+  nsresult Init();
+
+private:
+  ~nsKDEShellService() {}
+
+  bool mCheckedThisSession;
+};
+
+#endif // nskdeshellservice_h____
diff --git a/browser/components/shell/nsUnixShellService.cpp b/browser/components/shell/nsUnixShellService.cpp
new file mode 100644
--- /dev/null
+++ b/browser/components/shell/nsUnixShellService.cpp
@@ -0,0 +1,22 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+#include "nsUnixShellService.h"
+#include "nsGNOMEShellService.h"
+#include "nsKDEShellService.h"
+#include "nsKDEUtils.h"
+#include "mozilla/ModuleUtils.h"
+
+NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsGNOMEShellService, Init)
+NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(nsKDEShellService, Init)
+
+NS_IMETHODIMP
+nsUnixShellServiceConstructor(nsISupports *aOuter, REFNSIID aIID, void **aResult)
+{
+    if( nsKDEUtils::kdeSupport())
+        return nsKDEShellServiceConstructor( aOuter, aIID, aResult );
+    return nsGNOMEShellServiceConstructor( aOuter, aIID, aResult );
+}
diff --git a/browser/components/shell/nsUnixShellService.h b/browser/components/shell/nsUnixShellService.h
new file mode 100644
--- /dev/null
+++ b/browser/components/shell/nsUnixShellService.h
@@ -0,0 +1,15 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+#ifndef nsunixshellservice_h____
+#define nsunixshellservice_h____
+
+#include "nsIGNOMEShellService.h"
+
+NS_IMETHODIMP
+nsUnixShellServiceConstructor(nsISupports *aOuter, REFNSIID aIID, void **aResult);
+
+#endif // nsunixshellservice_h____
diff --git a/browser/installer/package-manifest.in b/browser/installer/package-manifest.in
--- a/browser/installer/package-manifest.in
+++ b/browser/installer/package-manifest.in
@@ -657,16 +657,18 @@
 @RESPATH@/browser/defaults/blocklists
 @RESPATH@/browser/defaults/pinning
 
 ; Warning: changing the path to channel-prefs.js can cause bugs (Bug 756325)
 ; Technically this is an app pref file, but we are keeping it in the original
 ; gre location for now.
 @RESPATH@/defaults/pref/channel-prefs.js
 
+@BINPATH@/defaults/pref/kde.js
+
 ; Remote control protocol prefs
 ; defined in ../../testing/marionette/prefs/marionette.js
 @RESPATH@/defaults/pref/marionette.js
 
 ; Services (gre) prefs
 @RESPATH@/defaults/pref/services-sync.js
 
 ; [Layout Engine Resources]