chromium-dev/chromium-non-void-return.patch

Index: chromium-72.0.3626.53/base/bind_internal.h
===================================================================
--- chromium-72.0.3626.53.orig/base/bind_internal.h
+++ chromium-72.0.3626.53/base/bind_internal.h
@@ -749,6 +749,7 @@ bool QueryCancellationTraitsImpl(BindSta
           functor, std::get<indices>(bound_args)...);
   }
   NOTREACHED();
+  __builtin_abort ();
 }
 
 // Relays |base| to corresponding CallbackCancellationTraits<>::Run(). Returns
Index: chromium-72.0.3626.53/base/callback_internal.cc
===================================================================
--- chromium-72.0.3626.53.orig/base/callback_internal.cc
+++ chromium-72.0.3626.53/base/callback_internal.cc
@@ -21,6 +21,7 @@ bool QueryCancellationTraitsForNonCancel
       return true;
   }
   NOTREACHED();
+  __builtin_abort ();
 }
 
 }  // namespace
Index: chromium-72.0.3626.53/cc/input/snap_fling_controller.cc
===================================================================
--- chromium-72.0.3626.53.orig/cc/input/snap_fling_controller.cc
+++ chromium-72.0.3626.53/cc/input/snap_fling_controller.cc
@@ -26,6 +26,8 @@ bool SnapFlingController::FilterEventFor
     case GestureScrollType::kEnd: {
       return state_ == State::kActive || state_ == State::kFinished;
     }
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/chrome/browser/background_fetch/background_fetch_download_client.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/background_fetch/background_fetch_download_client.cc
+++ chromium-72.0.3626.53/chrome/browser/background_fetch/background_fetch_download_client.cc
@@ -36,6 +36,8 @@ BackgroundFetchFailureReason ToBackgroun
     case download::Client::FailureReason::ABORTED:
     case download::Client::FailureReason::CANCELLED:
       return BackgroundFetchFailureReason::CANCELLED;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/chrome/browser/download/offline_item_model.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/download/offline_item_model.cc
+++ chromium-72.0.3626.53/chrome/browser/download/offline_item_model.cc
@@ -147,6 +147,8 @@ download::DownloadItem::DownloadState Of
     case OfflineItemState::MAX_DOWNLOAD_STATE:
       NOTREACHED();
       return download::DownloadItem::CANCELLED;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/chrome/browser/download/offline_item_utils.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/download/offline_item_utils.cc
+++ chromium-72.0.3626.53/chrome/browser/download/offline_item_utils.cc
@@ -147,6 +147,8 @@ FailState OfflineItemUtils::ConvertDownl
     return offline_items_collection::FailState::name;
 #include "components/download/public/common/download_interrupt_reason_values.h"
 #undef INTERRUPT_REASON
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -166,6 +168,8 @@ OfflineItemUtils::ConvertFailStateToDown
     return download::DOWNLOAD_INTERRUPT_REASON_##name;
 #include "components/download/public/common/download_interrupt_reason_values.h"
 #undef INTERRUPT_REASON
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/chrome/browser/media/webrtc/media_stream_capture_indicator.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/media/webrtc/media_stream_capture_indicator.cc
+++ chromium-72.0.3626.53/chrome/browser/media/webrtc/media_stream_capture_indicator.cc
@@ -250,6 +250,7 @@ int& MediaStreamCaptureIndicator::WebCon
       NOTREACHED();
       return video_stream_count_;
   }
+  __builtin_abort ();
 }
 
 MediaStreamCaptureIndicator::MediaStreamCaptureIndicator() {}
Index: chromium-72.0.3626.53/chrome/browser/resource_coordinator/tab_lifecycle_unit.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/resource_coordinator/tab_lifecycle_unit.cc
+++ chromium-72.0.3626.53/chrome/browser/resource_coordinator/tab_lifecycle_unit.cc
@@ -156,6 +156,7 @@ bool IsValidStateChange(LifecycleUnitSta
       }
     }
   }
+  __builtin_abort ();
 }
 
 StateChangeReason DiscardReasonToStateChangeReason(
@@ -167,6 +168,8 @@ StateChangeReason DiscardReasonToStateCh
       return StateChangeReason::BROWSER_INITIATED;
     case LifecycleUnitDiscardReason::URGENT:
       return StateChangeReason::SYSTEM_MEMORY_PRESSURE;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/chrome/browser/ui/autofill/save_card_bubble_controller_impl.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/ui/autofill/save_card_bubble_controller_impl.cc
+++ chromium-72.0.3626.53/chrome/browser/ui/autofill/save_card_bubble_controller_impl.cc
@@ -236,6 +236,8 @@ base::string16 SaveCardBubbleControllerI
     case BubbleType::INACTIVE:
       NOTREACHED();
       return base::string16();
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/chrome/browser/ui/views/autofill/autofill_popup_view_native_views.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/ui/views/autofill/autofill_popup_view_native_views.cc
+++ chromium-72.0.3626.53/chrome/browser/ui/views/autofill/autofill_popup_view_native_views.cc
@@ -553,6 +553,8 @@ PopupItemLayoutType AutofillPopupSuggest
         default:
           return PopupItemLayoutType::kTrailingIcon;
       }
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -573,6 +575,8 @@ bool AutofillPopupSuggestionView::Should
     case ForcedFontWeight::kBold:
       *font_weight = gfx::Font::Weight::BOLD;
       return true;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/chrome/browser/ui/views/autofill/local_card_migration_dialog_view.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/ui/views/autofill/local_card_migration_dialog_view.cc
+++ chromium-72.0.3626.53/chrome/browser/ui/views/autofill/local_card_migration_dialog_view.cc
@@ -387,6 +387,7 @@ bool LocalCardMigrationDialogView::Accep
       controller_->OnDoneButtonClicked();
       return true;
   }
+  __builtin_abort ();
 }
 
 bool LocalCardMigrationDialogView::Cancel() {
@@ -399,6 +400,7 @@ bool LocalCardMigrationDialogView::Cance
       controller_->OnViewCardsButtonClicked();
       return true;
   }
+  __builtin_abort ();
 }
 
 bool LocalCardMigrationDialogView::Close() {
@@ -470,6 +472,8 @@ base::string16 LocalCardMigrationDialogV
     case LocalCardMigrationDialogState::kActionRequired:
       return l10n_util::GetStringUTF16(
           IDS_AUTOFILL_LOCAL_CARD_MIGRATION_DIALOG_BUTTON_LABEL_DONE);
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -483,6 +487,7 @@ base::string16 LocalCardMigrationDialogV
       return l10n_util::GetStringUTF16(
           IDS_AUTOFILL_LOCAL_CARD_MIGRATION_DIALOG_BUTTON_LABEL_VIEW_CARDS);
   }
+  __builtin_abort ();
 }
 
 LocalCardMigrationDialog* CreateLocalCardMigrationDialogView(
Index: chromium-72.0.3626.53/chrome/browser/ui/views/material_refresh_layout_provider.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/ui/views/material_refresh_layout_provider.cc
+++ chromium-72.0.3626.53/chrome/browser/ui/views/material_refresh_layout_provider.cc
@@ -41,6 +41,8 @@ int MaterialRefreshLayoutProvider::GetCo
       return 8;
     case views::EMPHASIS_MAXIMUM:
       return std::min(size.width(), size.height()) / 2;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -58,6 +60,8 @@ int MaterialRefreshLayoutProvider::GetSh
       return 3;
     case views::EMPHASIS_MAXIMUM:
       return 16;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/chrome/browser/ui/webui/discards/discards_ui.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/ui/webui/discards/discards_ui.cc
+++ chromium-72.0.3626.53/chrome/browser/ui/webui/discards/discards_ui.cc
@@ -56,6 +56,8 @@ mojom::LifecycleUnitVisibility GetLifecy
       return mojom::LifecycleUnitVisibility::OCCLUDED;
     case content::Visibility::VISIBLE:
       return mojom::LifecycleUnitVisibility::VISIBLE;
+    default:
+      __builtin_abort ();
   }
 #if defined(COMPILER_MSVC)
   NOTREACHED();
Index: chromium-72.0.3626.53/chrome/browser/ui/webui/media/media_engagement_ui.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/ui/webui/media/media_engagement_ui.cc
+++ chromium-72.0.3626.53/chrome/browser/ui/webui/media/media_engagement_ui.cc
@@ -100,6 +100,7 @@ class MediaEngagementScoreDetailsProvide
       case content::AutoplayPolicy::kDocumentUserActivationRequired:
         return "document-user-activation-required";
     }
+    __builtin_abort ();
   }
 
   const std::string GetPreloadVersion() {
Index: chromium-72.0.3626.53/components/autofill/core/browser/autofill_external_delegate.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/autofill/core/browser/autofill_external_delegate.cc
+++ chromium-72.0.3626.53/components/autofill/core/browser/autofill_external_delegate.cc
@@ -457,6 +457,8 @@ base::string16 AutofillExternalDelegate:
     case PopupType::kPasswords:
       NOTREACHED();
       return base::string16();
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/autofill/core/browser/autofill_manager.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/autofill/core/browser/autofill_manager.cc
+++ chromium-72.0.3626.53/components/autofill/core/browser/autofill_manager.cc
@@ -271,6 +271,7 @@ PopupType AutofillManager::GetPopupType(
 
     default:
       NOTREACHED();
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/autofill/core/browser/webdata/autofill_sync_bridge_util.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/autofill/core/browser/webdata/autofill_sync_bridge_util.cc
+++ chromium-72.0.3626.53/components/autofill/core/browser/webdata/autofill_sync_bridge_util.cc
@@ -28,6 +28,8 @@ sync_pb::WalletMaskedCreditCard::WalletC
       return sync_pb::WalletMaskedCreditCard::VALID;
     case CreditCard::EXPIRED:
       return sync_pb::WalletMaskedCreditCard::EXPIRED;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -38,6 +40,8 @@ CreditCard::ServerStatus ServerToLocalSt
       return CreditCard::OK;
     case sync_pb::WalletMaskedCreditCard::EXPIRED:
       return CreditCard::EXPIRED;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -82,6 +86,8 @@ const char* CardNetworkFromWalletCardTyp
     case sync_pb::WalletMaskedCreditCard::SWITCH:
     case sync_pb::WalletMaskedCreditCard::UNKNOWN:
       return kGenericCard;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -95,6 +101,7 @@ sync_pb::WalletMaskedCreditCard::WalletC
     case CreditCard::CARD_TYPE_PREPAID:
       return sync_pb::WalletMaskedCreditCard::PREPAID;
     case CreditCard::CARD_TYPE_UNKNOWN:
+    default:
       return sync_pb::WalletMaskedCreditCard::UNKNOWN_CARD_CLASS;
   }
 }
@@ -110,6 +117,8 @@ CreditCard::CardType CardTypeFromWalletC
       return CreditCard::CARD_TYPE_PREPAID;
     case sync_pb::WalletMaskedCreditCard::UNKNOWN_CARD_CLASS:
       return CreditCard::CARD_TYPE_UNKNOWN;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -162,6 +171,8 @@ std::string GetClientTagForSpecificsId(
     case AutofillWalletSpecifics::UNKNOWN:
       NOTREACHED();
       return "";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/autofill/core/browser/webdata/autofill_wallet_metadata_sync_bridge.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/autofill/core/browser/webdata/autofill_wallet_metadata_sync_bridge.cc
+++ chromium-72.0.3626.53/components/autofill/core/browser/webdata/autofill_wallet_metadata_sync_bridge.cc
@@ -43,6 +43,8 @@ std::string GetClientTagForSpecificsId(W
     case WalletMetadataSpecifics::UNKNOWN:
       NOTREACHED();
       return "";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/cast_channel/cast_message_util.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/cast_channel/cast_message_util.cc
+++ chromium-72.0.3626.53/components/cast_channel/cast_message_util.cc
@@ -362,6 +362,8 @@ const char* GetAppAvailabilityResultToSt
       return "unavailable";
     case GetAppAvailabilityResult::kUnknown:
       return "unknown";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/data_reduction_proxy/core/browser/data_reduction_proxy_util.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/data_reduction_proxy/core/browser/data_reduction_proxy_util.cc
+++ chromium-72.0.3626.53/components/data_reduction_proxy/core/browser/data_reduction_proxy_util.cc
@@ -321,6 +321,8 @@ PageloadMetrics_ConnectionType ProtoConn
       return PageloadMetrics_ConnectionType_CONNECTION_NONE;
     case net::NetworkChangeNotifier::CONNECTION_BLUETOOTH:
       return PageloadMetrics_ConnectionType_CONNECTION_BLUETOOTH;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -363,6 +365,8 @@ ProtoLitePageRedirectStatusFromLitePageR
       return HTTPSLitePagePreviewInfo_Status_FAILURE;
     case previews::ServerLitePageStatus::kControl:
       return HTTPSLitePagePreviewInfo_Status_CONTROL;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/password_manager/core/browser/browser_save_password_progress_logger.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/password_manager/core/browser/browser_save_password_progress_logger.cc
+++ chromium-72.0.3626.53/components/password_manager/core/browser/browser_save_password_progress_logger.cc
@@ -72,6 +72,8 @@ std::string VoteTypeToString(
       return "HTML classifier";
     case AutofillUploadContents::Field::FIRST_USE:
       return "First use";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/policy/core/common/cloud/cloud_policy_util.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/policy/core/common/cloud/cloud_policy_util.cc
+++ chromium-72.0.3626.53/components/policy/core/common/cloud/cloud_policy_util.cc
@@ -170,6 +170,8 @@ em::Channel ConvertToProtoChannel(versio
       return em::CHANNEL_BETA;
     case version_info::Channel::STABLE:
       return em::CHANNEL_STABLE;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/policy/core/common/policy_proto_decoders.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/policy/core/common/policy_proto_decoders.cc
+++ chromium-72.0.3626.53/components/policy/core/common/policy_proto_decoders.cc
@@ -42,6 +42,8 @@ bool GetPolicyLevel(const AnyPolicyProto
       return true;
     case em::PolicyOptions::UNSET:
       return false;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/previews/content/previews_hints.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/previews/content/previews_hints.cc
+++ chromium-72.0.3626.53/components/previews/content/previews_hints.cc
@@ -124,6 +124,8 @@ base::Optional<PreviewsType> ConvertProt
       return PreviewsType::RESOURCE_LOADING_HINTS;
     case optimization_guide::proto::LITE_PAGE_REDIRECT:
       return PreviewsType::LITE_PAGE_REDIRECT;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -148,6 +150,8 @@ net::EffectiveConnectionType ConvertProt
     case optimization_guide::proto::EffectiveConnectionType::
         EFFECTIVE_CONNECTION_TYPE_4G:
       return net::EffectiveConnectionType::EFFECTIVE_CONNECTION_TYPE_4G;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/previews/core/previews_black_list.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/previews/core/previews_black_list.cc
+++ chromium-72.0.3626.53/components/previews/core/previews_black_list.cc
@@ -34,6 +34,8 @@ PreviewsEligibilityReason BlacklistReaso
       return PreviewsEligibilityReason::ALLOWED;
     case blacklist::BlacklistReason::kAllowed:
       return PreviewsEligibilityReason::ALLOWED;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/signin/core/browser/about_signin_internals.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/signin/core/browser/about_signin_internals.cc
+++ chromium-72.0.3626.53/components/signin/core/browser/about_signin_internals.cc
@@ -564,6 +564,8 @@ std::string AboutSigninInternals::Refres
       return "Revoked";
     case AboutSigninInternals::RefreshTokenEventType::kAllTokensLoaded:
       return "Loaded";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/signin/core/browser/profile_oauth2_token_service.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/signin/core/browser/profile_oauth2_token_service.cc
+++ chromium-72.0.3626.53/components/signin/core/browser/profile_oauth2_token_service.cc
@@ -49,6 +49,8 @@ std::string SourceToString(SourceForRefr
       return "DiceResponseHandler::Signout";
     case SourceForRefreshTokenOperation::kDiceTurnOnSyncHelper_Abort:
       return "DiceTurnOnSyncHelper::Abort";
+    default:
+      __builtin_abort ();
   }
 }
 }  // namespace
@@ -204,6 +206,8 @@ bool ProfileOAuth2TokenService::HasLoadC
         LOAD_CREDENTIALS_FINISHED_WITH_NO_TOKEN_FOR_PRIMARY_ACCOUNT:
       // Load credentials finished with success.
       return true;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/viz/service/display/skia_renderer.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/viz/service/display/skia_renderer.cc
+++ chromium-72.0.3626.53/components/viz/service/display/skia_renderer.cc
@@ -1278,6 +1278,8 @@ GrContext* SkiaRenderer::GetGrContext()
       return context_provider_->GrContext();
     case DrawMode::SKPRECORD:
       return nullptr;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/content/browser/cache_storage/cache_storage_quota_client.cc
===================================================================
--- chromium-72.0.3626.53.orig/content/browser/cache_storage/cache_storage_quota_client.cc
+++ chromium-72.0.3626.53/content/browser/cache_storage/cache_storage_quota_client.cc
@@ -98,6 +98,8 @@ storage::QuotaClient::ID CacheStorageQuo
       return kServiceWorkerCache;
     case CacheStorageOwner::kBackgroundFetch:
       return kBackgroundFetch;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/content/browser/frame_host/frame_tree_node.cc
===================================================================
--- chromium-72.0.3626.53.orig/content/browser/frame_host/frame_tree_node.cc
+++ chromium-72.0.3626.53/content/browser/frame_host/frame_tree_node.cc
@@ -603,6 +603,7 @@ bool FrameTreeNode::UpdateUserActivation
       return ClearUserActivation();
   }
   NOTREACHED() << "Invalid update_type.";
+  __builtin_abort ();
 }
 
 void FrameTreeNode::OnSetHasReceivedUserGestureBeforeNavigation(bool value) {
Index: chromium-72.0.3626.53/content/browser/media/audio_output_stream_broker.cc
===================================================================
--- chromium-72.0.3626.53.orig/content/browser/media/audio_output_stream_broker.cc
+++ chromium-72.0.3626.53/content/browser/media/audio_output_stream_broker.cc
@@ -53,6 +53,8 @@ StreamBrokerDisconnectReason GetDisconne
                  : StreamBrokerDisconnectReason::kDocumentDestroyed;
     case DisconnectReason::kDefault:
       return StreamBrokerDisconnectReason::kDefault;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/content/renderer/input/input_event_prediction.cc
===================================================================
--- chromium-72.0.3626.53.orig/content/renderer/input/input_event_prediction.cc
+++ chromium-72.0.3626.53/content/renderer/input/input_event_prediction.cc
@@ -108,6 +108,8 @@ std::unique_ptr<ui::InputPredictor> Inpu
       return std::make_unique<ui::LeastSquaresPredictor>();
     case PredictorType::kKalman:
       return std::make_unique<ui::KalmanPredictor>();
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/content/renderer/media/stream/media_stream_audio_processor_options.cc
===================================================================
--- chromium-72.0.3626.53.orig/content/renderer/media/stream/media_stream_audio_processor_options.cc
+++ chromium-72.0.3626.53/content/renderer/media/stream/media_stream_audio_processor_options.cc
@@ -99,6 +99,8 @@ AudioProcessingProperties::ToAudioProces
         return media::EchoCancellationType::kAec3;
       case EchoCancellationType::kEchoCancellationSystem:
         return media::EchoCancellationType::kSystemAec;
+      default:
+        __builtin_abort ();
     }
   };
 
Index: chromium-72.0.3626.53/content/renderer/media/stream/media_stream_constraints_util_video_device.cc
===================================================================
--- chromium-72.0.3626.53.orig/content/renderer/media/stream/media_stream_constraints_util_video_device.cc
+++ chromium-72.0.3626.53/content/renderer/media/stream/media_stream_constraints_util_video_device.cc
@@ -554,6 +554,8 @@ blink::WebMediaStreamTrack::DisplayCaptu
           kApplication;
     case media::mojom::DisplayCaptureSurfaceType::BROWSER:
       return blink::WebMediaStreamTrack::DisplayCaptureSurfaceType::kBrowser;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -566,6 +568,8 @@ blink::WebMediaStreamTrack::CursorCaptur
       return blink::WebMediaStreamTrack::CursorCaptureType::kAlways;
     case media::mojom::CursorCaptureType::MOTION:
       return blink::WebMediaStreamTrack::CursorCaptureType::kMotion;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/content/renderer/media/webrtc/peer_connection_tracker.cc
===================================================================
--- chromium-72.0.3626.53.orig/content/renderer/media/webrtc/peer_connection_tracker.cc
+++ chromium-72.0.3626.53/content/renderer/media/webrtc/peer_connection_tracker.cc
@@ -120,6 +120,8 @@ static const char* SerializeDirection(
       return "'recvonly'";
     case webrtc::RtpTransceiverDirection::kInactive:
       return "'inactive'";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/device/bluetooth/bluetooth_remote_gatt_characteristic.cc
===================================================================
--- chromium-72.0.3626.53.orig/device/bluetooth/bluetooth_remote_gatt_characteristic.cc
+++ chromium-72.0.3626.53/device/bluetooth/bluetooth_remote_gatt_characteristic.cc
@@ -396,6 +396,8 @@ bool BluetoothRemoteGattCharacteristic::
       return hasNotify;
     case NotificationType::kIndication:
       return hasIndicate;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/extensions/browser/url_loader_factory_manager.cc
===================================================================
--- chromium-72.0.3626.53.orig/extensions/browser/url_loader_factory_manager.cc
+++ chromium-72.0.3626.53/extensions/browser/url_loader_factory_manager.cc
@@ -65,6 +65,8 @@ bool IsSpecialURLLoaderFactoryRequired(c
              DoExtensionPermissionsCoverCorsOrCorbRelatedOrigins(extension);
     case FactoryUser::kExtensionProcess:
       return DoExtensionPermissionsCoverCorsOrCorbRelatedOrigins(extension);
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/gin/v8_isolate_memory_dump_provider.cc
===================================================================
--- chromium-72.0.3626.53.orig/gin/v8_isolate_memory_dump_provider.cc
+++ chromium-72.0.3626.53/gin/v8_isolate_memory_dump_provider.cc
@@ -131,6 +131,8 @@ std::string IsolateTypeString(IsolateHol
       return "test";
     case IsolateHolder::IsolateType::kUtility:
       return "utility";
+    default:
+      __builtin_abort ();
   }
   LOG(FATAL) << "Unreachable code";
 }
@@ -147,6 +149,8 @@ bool CanHaveMultipleIsolates(IsolateHold
     case IsolateHolder::IsolateType::kUtility:
       // PDFium and ProxyResolver create one isolate per process.
       return false;
+    default:
+      __builtin_abort ();
   }
   LOG(FATAL) << "Unreachable code";
 }
Index: chromium-72.0.3626.53/gpu/config/gpu_info.cc
===================================================================
--- chromium-72.0.3626.53.orig/gpu/config/gpu_info.cc
+++ chromium-72.0.3626.53/gpu/config/gpu_info.cc
@@ -84,6 +84,8 @@ const char* OverlayFormatToString(Overla
       return "YUY2";
     case OverlayFormat::kNV12:
       return "NV12";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/media/audio/audio_processing.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/audio/audio_processing.cc
+++ chromium-72.0.3626.53/media/audio/audio_processing.cc
@@ -19,6 +19,8 @@ std::string AudioProcessingSettings::ToS
         return "experimental";
       case AutomaticGainControlType::kHybridExperimental:
         return "hybrid experimental";
+      default:
+        __builtin_abort ();
     }
   };
 
@@ -32,6 +34,8 @@ std::string AudioProcessingSettings::ToS
         return "aec3";
       case EchoCancellationType::kSystemAec:
         return "system aec";
+      default:
+        __builtin_abort ();
     }
   };
 
@@ -43,6 +47,8 @@ std::string AudioProcessingSettings::ToS
         return "default";
       case NoiseSuppressionType::kExperimental:
         return "experimental";
+      default:
+        __builtin_abort ();
     }
   };
 
Index: chromium-72.0.3626.53/media/base/decode_status.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/base/decode_status.cc
+++ chromium-72.0.3626.53/media/base/decode_status.cc
@@ -18,6 +18,8 @@ const char* GetDecodeStatusString(Decode
       return "DecodeStatus::ABORTED";
     case DecodeStatus::DECODE_ERROR:
       return "DecodeStatus::DECODE_ERROR";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/media/base/decryptor.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/base/decryptor.cc
+++ chromium-72.0.3626.53/media/base/decryptor.cc
@@ -17,6 +17,8 @@ const char* Decryptor::GetStatusName(Sta
       return "need_more_data";
     case kError:
       return "error";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/media/base/demuxer_stream.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/base/demuxer_stream.cc
+++ chromium-72.0.3626.53/media/base/demuxer_stream.cc
@@ -17,6 +17,8 @@ const char* DemuxerStream::GetTypeName(T
       return "text";
     case DemuxerStream::UNKNOWN:
       return "unknown";
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -31,6 +33,8 @@ const char* DemuxerStream::GetStatusName
       return "config_changed";
     case DemuxerStream::kError:
       return "error";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/media/blink/watch_time_reporter.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/blink/watch_time_reporter.cc
+++ chromium-72.0.3626.53/media/blink/watch_time_reporter.cc
@@ -571,6 +571,8 @@ WatchTimeKey WatchTimeReporter::GetDispl
       return DISPLAY_TYPE_KEY(DisplayFullscreen);
     case DisplayType::kPictureInPicture:
       return DISPLAY_TYPE_KEY(DisplayPictureInPicture);
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/media/blink/webmediaplayer_impl.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/blink/webmediaplayer_impl.cc
+++ chromium-72.0.3626.53/media/blink/webmediaplayer_impl.cc
@@ -197,6 +197,8 @@ EncryptionMode DetermineEncryptionMode(
       return EncryptionMode::kCenc;
     case EncryptionScheme::CIPHER_MODE_AES_CBC:
       return EncryptionMode::kCbcs;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/media/capture/video/video_capture_device.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/capture/video/video_capture_device.cc
+++ chromium-72.0.3626.53/media/capture/video/video_capture_device.cc
@@ -83,6 +83,8 @@ VideoCaptureFrameDropReason ConvertReser
       return VideoCaptureFrameDropReason::kBufferPoolMaxBufferCountExceeded;
     case VideoCaptureDevice::Client::ReserveResult::kAllocationFailed:
       return VideoCaptureFrameDropReason::kBufferPoolBufferAllocationFailed;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/media/capture/video/video_capture_device_descriptor.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/capture/video/video_capture_device_descriptor.cc
+++ chromium-72.0.3626.53/media/capture/video/video_capture_device_descriptor.cc
@@ -94,6 +94,8 @@ const char* VideoCaptureDeviceDescriptor
       return "Virtual Device";
     case VideoCaptureApi::UNKNOWN:
       return "Unknown";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/media/cdm/cdm_helpers.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/cdm/cdm_helpers.cc
+++ chromium-72.0.3626.53/media/cdm/cdm_helpers.cc
@@ -25,6 +25,8 @@ gfx::ColorSpace::RangeID ToGfxColorSpace
       return gfx::ColorSpace::RangeID::FULL;
     case cdm::ColorRange::kDerived:
       return gfx::ColorSpace::RangeID::DERIVED;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/media/filters/decoder_stream.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/filters/decoder_stream.cc
+++ chromium-72.0.3626.53/media/filters/decoder_stream.cc
@@ -89,6 +89,8 @@ const char* GetStatusString(typename Dec
       return "demuxer_read_aborted";
     case DecoderStream<StreamType>::DECODE_ERROR:
       return "decode_error";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/media/gpu/vaapi/vaapi_wrapper.cc
===================================================================
--- chromium-72.0.3626.53.orig/media/gpu/vaapi/vaapi_wrapper.cc
+++ chromium-72.0.3626.53/media/gpu/vaapi/vaapi_wrapper.cc
@@ -401,6 +401,8 @@ static VAEntrypoint GetVaEntryPoint(Vaap
     case VaapiWrapper::kCodecModeMax:
       NOTREACHED();
       return VAEntrypointVLD;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/net/nqe/network_quality_estimator.cc
===================================================================
--- chromium-72.0.3626.53.orig/net/nqe/network_quality_estimator.cc
+++ chromium-72.0.3626.53/net/nqe/network_quality_estimator.cc
@@ -1264,6 +1264,8 @@ base::TimeDelta NetworkQualityEstimator:
     case nqe::internal::OBSERVATION_CATEGORY_COUNT:
       NOTREACHED();
       return base::TimeDelta();
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/services/audio/public/cpp/audio_system_to_service_adapter.cc
===================================================================
--- chromium-72.0.3626.53.orig/services/audio/public/cpp/audio_system_to_service_adapter.cc
+++ chromium-72.0.3626.53/services/audio/public/cpp/audio_system_to_service_adapter.cc
@@ -66,6 +66,8 @@ const char* GetTraceEvent(Action action)
       return "AudioSystemToServiceAdapter::GetAssociatedOutputDeviceID";
     case kGetInputDeviceInfo:
       return "AudioSystemToServiceAdapter::GetInputDeviceInfo";
+    default:
+      __builtin_abort ();
   }
   NOTREACHED();
 }
Index: chromium-72.0.3626.53/services/network/cross_origin_read_blocking.cc
===================================================================
--- chromium-72.0.3626.53.orig/services/network/cross_origin_read_blocking.cc
+++ chromium-72.0.3626.53/services/network/cross_origin_read_blocking.cc
@@ -782,6 +782,8 @@ bool CrossOriginReadBlocking::ResponseAn
       return sniffers_.empty() && !found_blockable_content_;
     case kBlock:
       return false;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -793,6 +795,8 @@ bool CrossOriginReadBlocking::ResponseAn
       return sniffers_.empty() && found_blockable_content_;
     case kBlock:
       return true;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/services/network/public/cpp/cors/cors.cc
===================================================================
--- chromium-72.0.3626.53.orig/services/network/public/cpp/cors/cors.cc
+++ chromium-72.0.3626.53/services/network/public/cpp/cors/cors.cc
@@ -552,6 +552,8 @@ bool IsCorsSameOriginResponseType(mojom:
     case mojom::FetchResponseType::kOpaque:
     case mojom::FetchResponseType::kOpaqueRedirect:
       return false;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -565,6 +567,8 @@ bool IsCorsCrossOriginResponseType(mojom
     case mojom::FetchResponseType::kOpaque:
     case mojom::FetchResponseType::kOpaqueRedirect:
       return true;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -582,6 +586,8 @@ bool CalculateCredentialsFlag(mojom::Fet
       return response_tainting == network::mojom::FetchResponseType::kBasic;
     case network::mojom::FetchCredentialsMode::kInclude:
       return true;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/services/network/public/cpp/host_resolver_mojom_traits.cc
===================================================================
--- chromium-72.0.3626.53.orig/services/network/public/cpp/host_resolver_mojom_traits.cc
+++ chromium-72.0.3626.53/services/network/public/cpp/host_resolver_mojom_traits.cc
@@ -38,6 +38,8 @@ base::Optional<bool> FromTristate(DnsCon
       return true;
     case DnsConfigOverrides::Tristate::TRISTATE_FALSE:
       return false;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -225,6 +227,8 @@ EnumTraits<ResolveHostParameters::DnsQue
       return ResolveHostParameters::DnsQueryType::A;
     case net::DnsQueryType::AAAA:
       return ResolveHostParameters::DnsQueryType::AAAA;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -242,6 +246,8 @@ bool EnumTraits<ResolveHostParameters::D
     case ResolveHostParameters::DnsQueryType::AAAA:
       *output = net::DnsQueryType::AAAA;
       return true;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -258,6 +264,8 @@ EnumTraits<ResolveHostParameters::Source
       return ResolveHostParameters::Source::DNS;
     case net::HostResolverSource::MULTICAST_DNS:
       return ResolveHostParameters::Source::MULTICAST_DNS;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -278,6 +286,8 @@ bool EnumTraits<ResolveHostParameters::S
     case ResolveHostParameters::Source::MULTICAST_DNS:
       *output = net::HostResolverSource::MULTICAST_DNS;
       return true;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/services/ws/public/cpp/gpu/command_buffer_metrics.cc
===================================================================
--- chromium-72.0.3626.53.orig/services/ws/public/cpp/gpu/command_buffer_metrics.cc
+++ chromium-72.0.3626.53/services/ws/public/cpp/gpu/command_buffer_metrics.cc
@@ -96,6 +96,8 @@ std::string ContextTypeToString(ContextT
       return "ForTesting";
     case ContextType::XR_COMPOSITING:
       return "XRCompositing";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/core/css/style_environment_variables.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/core/css/style_environment_variables.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/core/css/style_environment_variables.cc
@@ -63,7 +63,7 @@ const AtomicString StyleEnvironmentVaria
     case UADefinedVariable::kSafeAreaInsetRight:
       return "safe-area-inset-right";
     default:
-      break;
+      __builtin_abort ();
   }
 
   NOTREACHED();
Index: chromium-72.0.3626.53/third_party/blink/renderer/core/html/media/media_controls.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/core/html/media/media_controls.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/core/html/media/media_controls.cc
@@ -36,6 +36,8 @@ AtomicString MediaControls::GetSizingCSS
       return kMediaControlsSizingMediumCSSClass;
     case MediaControlsSizingClass::kLarge:
       return kMediaControlsSizingLargeCSSClass;
+    default:
+      __builtin_abort ();
   }
 
   NOTREACHED();
Index: chromium-72.0.3626.53/third_party/blink/renderer/core/layout/layout_flexible_box.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/core/layout/layout_flexible_box.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/core/layout/layout_flexible_box.cc
@@ -602,6 +602,8 @@ LayoutUnit LayoutFlexibleBox::FlowAwareC
       return ContentLeft();
     case TransformedWritingMode::kRightToLeftWritingMode:
       return ContentInsetRight();
+    default:
+      __builtin_abort ();
   }
   NOTREACHED();
 }
@@ -617,6 +619,8 @@ LayoutUnit LayoutFlexibleBox::FlowAwareC
       return ContentInsetRight();
     case TransformedWritingMode::kRightToLeftWritingMode:
       return ContentLeft();
+    default:
+      __builtin_abort ();
   }
   NOTREACHED();
 }
Index: chromium-72.0.3626.53/third_party/blink/renderer/core/loader/mixed_content_checker.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/core/loader/mixed_content_checker.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/core/loader/mixed_content_checker.cc
@@ -239,6 +239,8 @@ bool MixedContentChecker::IsMixedContent
 
     case HttpsState::kModern:
       return IsInsecureUrl(url);
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/accessibility/ax_layout_object.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/accessibility/ax_layout_object.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/accessibility/ax_layout_object.cc
@@ -1235,6 +1235,8 @@ ax::mojom::TextPosition AXLayoutObject::
       return ax::mojom::TextPosition::kSubscript;
     case EVerticalAlign::kSuper:
       return ax::mojom::TextPosition::kSuperscript;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/accessibility/ax_position.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/accessibility/ax_position.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/accessibility/ax_position.cc
@@ -758,6 +758,8 @@ const AXObject* AXPosition::FindNeighbor
       }
       return nullptr;
     }
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/background_fetch/background_fetch_registration.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/background_fetch/background_fetch_registration.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/background_fetch/background_fetch_registration.cc
@@ -342,6 +342,8 @@ const String BackgroundFetchRegistration
       return "failure";
     case mojom::BackgroundFetchResult::UNSET:
       return "";
+    default:
+      __builtin_abort ();
   }
   NOTREACHED();
 }
@@ -362,6 +364,8 @@ const String BackgroundFetchRegistration
       return "quota-exceeded";
     case mojom::BackgroundFetchFailureReason::TOTAL_DOWNLOAD_SIZE_EXCEEDED:
       return "total-download-exceeded";
+    default:
+      __builtin_abort ();
   }
   NOTREACHED();
 }
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/cookie_store/cookie_change_event.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/cookie_store/cookie_change_event.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/cookie_store/cookie_change_event.cc
@@ -53,6 +53,8 @@ String ToCookieListItemSameSite(network:
       return "lax";
     case network::mojom::CookieSameSite::NO_RESTRICTION:
       return "unrestricted";
+    default:
+      __builtin_abort ();
   }
 
   NOTREACHED();
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/peerconnection/rtc_rtp_transceiver.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/peerconnection/rtc_rtp_transceiver.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/peerconnection/rtc_rtp_transceiver.cc
@@ -28,6 +28,8 @@ String TransceiverDirectionToString(
       return "recvonly";
     case webrtc::RtpTransceiverDirection::kInactive:
       return "inactive";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/storage/cached_storage_area.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/storage/cached_storage_area.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/storage/cached_storage_area.cc
@@ -643,6 +643,8 @@ Vector<uint8_t> CachedStorageArea::Strin
                   input.length() * sizeof(UChar));
       return result;
     }
+    default:
+      __builtin_abort ();
   }
   NOTREACHED();
 }
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/webaudio/audio_param.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/webaudio/audio_param.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/webaudio/audio_param.cc
@@ -145,7 +145,7 @@ String AudioParamHandler::GetParamName()
     case kParamTypeAudioWorklet:
       return custom_param_name_;
     default:
-      NOTREACHED();
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/platform/graphics/paint/scroll_paint_property_node.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/platform/graphics/paint/scroll_paint_property_node.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/platform/graphics/paint/scroll_paint_property_node.cc
@@ -18,7 +18,7 @@ WTF::String OverscrollBehaviorTypeToStri
     case OverscrollBehavior::kOverscrollBehaviorTypeContain:
       return "contain";
     default:
-      NOTREACHED();
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/platform/heap/heap_stats_collector.h
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/platform/heap/heap_stats_collector.h
+++ chromium-72.0.3626.53/third_party/blink/renderer/platform/heap/heap_stats_collector.h
@@ -94,6 +94,8 @@ class PLATFORM_EXPORT ThreadHeapStatsCol
         return "BlinkGC.VisitPersistents";
       case Id::kVisitStackRoots:
         return "BlinkGC.VisitStackRoots";
+      default:
+        __builtin_abort ();
     }
   }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/platform/scheduler/common/metrics_helper.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/platform/scheduler/common/metrics_helper.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/platform/scheduler/common/metrics_helper.cc
@@ -44,6 +44,8 @@ scheduling_metrics::ThreadType ConvertBl
     case WebThreadType::kCount:
       NOTREACHED();
       return scheduling_metrics::ThreadType::kCount;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/platform/scheduler/main_thread/page_scheduler_impl.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/platform/scheduler/main_thread/page_scheduler_impl.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/platform/scheduler/main_thread/page_scheduler_impl.cc
@@ -676,6 +676,8 @@ PageSchedulerImpl::PageLifecycleStateTra
           NOTREACHED();
           return base::nullopt;
       }
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/platform/wtf/casting.h
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/platform/wtf/casting.h
+++ chromium-72.0.3626.53/third_party/blink/renderer/platform/wtf/casting.h
@@ -57,6 +57,7 @@ struct DowncastTraits {
   template <typename U>
   static bool AllowFrom(const U&) {
     static_assert(sizeof(U) == 0, "no downcast traits specialization for T");
+    return false;
   }
 };
 
Index: chromium-72.0.3626.53/third_party/webrtc/modules/video_coding/codecs/vp8/temporal_layers_checker.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/webrtc/modules/video_coding/codecs/vp8/temporal_layers_checker.cc
+++ chromium-72.0.3626.53/third_party/webrtc/modules/video_coding/codecs/vp8/temporal_layers_checker.cc
@@ -26,6 +26,8 @@ TemporalLayersChecker::CreateTemporalLay
     case Vp8TemporalLayersType::kBitrateDynamic:
       // Conference mode temporal layering for screen content in base stream.
       return absl::make_unique<TemporalLayersChecker>(num_temporal_layers);
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/ui/accessibility/platform/ax_platform_node_auralinux.cc
===================================================================
--- chromium-72.0.3626.53.orig/ui/accessibility/platform/ax_platform_node_auralinux.cc
+++ chromium-72.0.3626.53/ui/accessibility/platform/ax_platform_node_auralinux.cc
@@ -1641,6 +1641,8 @@ AtkRole AXPlatformNodeAuraLinux::GetAtkR
     case ax::mojom::Role::kPresentational:
     case ax::mojom::Role::kUnknown:
       return ATK_ROLE_REDUNDANT_OBJECT;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/ui/aura/mus/in_flight_change.cc
===================================================================
--- chromium-72.0.3626.53.orig/ui/aura/mus/in_flight_change.cc
+++ chromium-72.0.3626.53/ui/aura/mus/in_flight_change.cc
@@ -57,6 +57,8 @@ std::string ChangeTypeToString(ChangeTyp
       return "TRANSFORM";
     case ChangeType::VISIBLE:
       return "VISIBLE";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/ui/base/mojo/clipboard_struct_traits.h
===================================================================
--- chromium-72.0.3626.53.orig/ui/base/mojo/clipboard_struct_traits.h
+++ chromium-72.0.3626.53/ui/base/mojo/clipboard_struct_traits.h
@@ -20,6 +20,8 @@ struct EnumTraits<ui::mojom::ClipboardTy
         return ui::mojom::ClipboardType::SELECTION;
       case ui::CLIPBOARD_TYPE_DRAG:
         return ui::mojom::ClipboardType::DRAG;
+      default:
+        __builtin_abort ();
     }
   }
 
@@ -34,6 +36,8 @@ struct EnumTraits<ui::mojom::ClipboardTy
       case ui::mojom::ClipboardType::DRAG:
         *out = ui::CLIPBOARD_TYPE_DRAG;
         return true;
+      default:
+        __builtin_abort ();
     }
     NOTREACHED();
     return false;
Index: chromium-72.0.3626.53/ui/gfx/skia_vector_animation.cc
===================================================================
--- chromium-72.0.3626.53.orig/ui/gfx/skia_vector_animation.cc
+++ chromium-72.0.3626.53/ui/gfx/skia_vector_animation.cc
@@ -163,6 +163,8 @@ float SkiaVectorAnimation::GetCurrentPro
       // yet
       DCHECK(timer_control_);
       return timer_control_->GetNormalizedCurrentCycleProgress();
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/ui/views/layout/layout_provider.cc
===================================================================
--- chromium-72.0.3626.53.orig/ui/views/layout/layout_provider.cc
+++ chromium-72.0.3626.53/ui/views/layout/layout_provider.cc
@@ -155,6 +155,8 @@ int LayoutProvider::GetCornerRadiusMetri
       return touch_ui ? 8 : 4;
     case EMPHASIS_MAXIMUM:
       return touch_ui ? std::min(size.width(), size.height()) / 2 : 4;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/flags_ui/feature_entry.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/flags_ui/feature_entry.cc
+++ chromium-72.0.3626.53/components/flags_ui/feature_entry.cc
@@ -38,13 +38,16 @@ bool FeatureEntry::InternalNameMatches(c
     case FeatureEntry::MULTI_VALUE:
     case FeatureEntry::ENABLE_DISABLE_VALUE:
     case FeatureEntry::FEATURE_VALUE:
-    case FeatureEntry::FEATURE_WITH_PARAMS_VALUE:
+    case FeatureEntry::FEATURE_WITH_PARAMS_VALUE: {
       // Check that the pattern matches what's produced by NameForOption().
       int index = -1;
       return name.size() > internal_name_length + 1 &&
              name[internal_name_length] == kMultiSeparatorChar &&
              base::StringToInt(name.substr(internal_name_length + 1), &index) &&
              index >= 0 && index < num_options;
+       }
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/content/common/navigation_params.cc
===================================================================
--- chromium-72.0.3626.53.orig/content/common/navigation_params.cc
+++ chromium-72.0.3626.53/content/common/navigation_params.cc
@@ -47,6 +47,8 @@ bool IsNavigationDownloadAllowed(Navigat
     case NavigationDownloadPolicy::kAllowOpenerCrossOrigin:
     case NavigationDownloadPolicy::kAllowOpenerCrossOriginNoGesture:
       return true;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/google_apis/gaia/google_service_auth_error.cc
===================================================================
--- chromium-72.0.3626.53.orig/google_apis/gaia/google_service_auth_error.cc
+++ chromium-72.0.3626.53/google_apis/gaia/google_service_auth_error.cc
@@ -29,6 +29,8 @@ const char* InvalidCredentialsReasonToSt
     case InvalidGaiaCredentialsReason::NUM_REASONS:
       NOTREACHED();
       return "";
+    default:
+      __builtin_abort ();
   }
 }
 }  // namespace
@@ -238,6 +240,8 @@ std::string GoogleServiceAuthError::ToSt
     case NUM_STATES:
       NOTREACHED();
       return std::string();
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/net/dns/dns_util.cc
===================================================================
--- chromium-72.0.3626.53.orig/net/dns/dns_util.cc
+++ chromium-72.0.3626.53/net/dns/dns_util.cc
@@ -231,6 +231,8 @@ uint16_t DnsQueryTypeToQtype(DnsQueryTyp
       return dns_protocol::kTypeA;
     case DnsQueryType::AAAA:
       return dns_protocol::kTypeAAAA;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/net/third_party/quic/core/qpack/qpack_instruction_decoder.cc
===================================================================
--- chromium-72.0.3626.53.orig/net/third_party/quic/core/qpack/qpack_instruction_decoder.cc
+++ chromium-72.0.3626.53/net/third_party/quic/core/qpack/qpack_instruction_decoder.cc
@@ -159,6 +159,8 @@ size_t QpackInstructionDecoder::DoVarint
     case http2::DecodeStatus::kDecodeError:
       OnError("Encoded integer too large.");
       return bytes_consumed;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -183,6 +185,8 @@ size_t QpackInstructionDecoder::DoVarint
     case http2::DecodeStatus::kDecodeError:
       OnError("Encoded integer too large.");
       return bytes_consumed;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/worklet/animation_and_paint_worklet_thread.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/worklet/animation_and_paint_worklet_thread.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/worklet/animation_and_paint_worklet_thread.cc
@@ -92,10 +92,13 @@ AnimationAndPaintWorkletThread::CreateWo
       return AnimationWorkletGlobalScope::Create(std::move(creation_params),
                                                  this);
     }
-    case WorkletType::PAINT_WORKLET:
+    case WorkletType::PAINT_WORKLET: {
       TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("paint-worklet"),
                    "AnimationAndPaintWorkletThread::CreateWorkerGlobalScope");
       return PaintWorkletGlobalScope::Create(std::move(creation_params), this);
+    }
+    default:
+      __builtin_abort ();
   };
 }
 
Index: chromium-72.0.3626.53/third_party/webrtc/api/video_codecs/create_vp8_temporal_layers.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/webrtc/api/video_codecs/create_vp8_temporal_layers.cc
+++ chromium-72.0.3626.53/third_party/webrtc/api/video_codecs/create_vp8_temporal_layers.cc
@@ -27,6 +27,8 @@ std::unique_ptr<Vp8TemporalLayers> Creat
       // Conference mode temporal layering for screen content in base stream.
       return absl::make_unique<ScreenshareLayers>(num_temporal_layers,
                                                   Clock::GetRealTimeClock());
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/webrtc/audio/channel_receive.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/webrtc/audio/channel_receive.cc
+++ chromium-72.0.3626.53/third_party/webrtc/audio/channel_receive.cc
@@ -69,6 +69,8 @@ webrtc::FrameType WebrtcFrameTypeForMedi
         kDiscountinuousTransmission:
       return kAudioFrameCN;
       break;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/webrtc/rtc_base/key_derivation.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/webrtc/rtc_base/key_derivation.cc
+++ chromium-72.0.3626.53/third_party/webrtc/rtc_base/key_derivation.cc
@@ -24,6 +24,8 @@ std::unique_ptr<KeyDerivation> KeyDeriva
   switch (key_derivation_algorithm) {
     case KeyDerivationAlgorithm::HKDF_SHA256:
       return absl::make_unique<OpenSSLKeyDerivationHKDF>();
+    default:
+      __builtin_abort ();
   }
   RTC_NOTREACHED();
 }
Index: chromium-72.0.3626.53/base/task/common/operations_controller.cc
===================================================================
--- chromium-72.0.3626.53.orig/base/task/common/operations_controller.cc
+++ chromium-72.0.3626.53/base/task/common/operations_controller.cc
@@ -55,6 +55,8 @@ OperationsController::OperationToken Ope
     case State::kShuttingDown:
       DecrementBy(1);
       return OperationToken(nullptr);
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -105,4 +107,4 @@ void OperationsController::DecrementBy(u
 }
 
 }  // namespace internal
-}  // namespace base
\ No newline at end of file
+}  // namespace base
Index: chromium-72.0.3626.53/chrome/browser/signin/mutable_profile_oauth2_token_service_delegate.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/signin/mutable_profile_oauth2_token_service_delegate.cc
+++ chromium-72.0.3626.53/chrome/browser/signin/mutable_profile_oauth2_token_service_delegate.cc
@@ -294,6 +294,8 @@ bool MutableProfileOAuth2TokenServiceDel
     case GaiaAuthConsumer::TokenRevocationStatus::kInvalidRequest:
     case GaiaAuthConsumer::TokenRevocationStatus::kUnknownError:
       return false;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/chrome/browser/ui/content_settings/content_setting_image_model.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/ui/content_settings/content_setting_image_model.cc
+++ chromium-72.0.3626.53/chrome/browser/ui/content_settings/content_setting_image_model.cc
@@ -474,6 +474,8 @@ bool ContentSettingDownloadsImageModel::
     case DownloadRequestLimiter::DOWNLOAD_UI_DEFAULT:
       // No need to show icon otherwise.
       return false;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/chrome/browser/ui/views/overlay/resize_handle_button.cc
===================================================================
--- chromium-72.0.3626.53.orig/chrome/browser/ui/views/overlay/resize_handle_button.cc
+++ chromium-72.0.3626.53/chrome/browser/ui/views/overlay/resize_handle_button.cc
@@ -57,6 +57,8 @@ int ResizeHandleButton::GetHTComponent()
       return HTBOTTOMRIGHT;
     case OverlayWindowViews::WindowQuadrant::kTopRight:
       return HTBOTTOMLEFT;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/autofill/core/browser/autofill_metrics.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/autofill/core/browser/autofill_metrics.cc
+++ chromium-72.0.3626.53/components/autofill/core/browser/autofill_metrics.cc
@@ -296,6 +296,8 @@ const char* GetSyncStateSuffix(AutofillS
       return ".SignedInAndSyncFeature";
     case AutofillSyncSigninState::kNumSyncStates:
       return ".Unknown";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/content_settings/core/browser/host_content_settings_map.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/content_settings/core/browser/host_content_settings_map.cc
+++ chromium-72.0.3626.53/components/content_settings/core/browser/host_content_settings_map.cc
@@ -231,6 +231,8 @@ const char* ContentSettingToString(Conte
     case CONTENT_SETTING_NUM_SETTINGS:
       NOTREACHED();
       return nullptr;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/components/omnibox/browser/autocomplete_match.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/omnibox/browser/autocomplete_match.cc
+++ chromium-72.0.3626.53/components/omnibox/browser/autocomplete_match.cc
@@ -261,6 +261,9 @@ const gfx::VectorIcon& AutocompleteMatch
       NOTREACHED();
       static const gfx::VectorIcon dummy = {};
       return dummy;
+
+    default:
+      __builtin_abort ();
   }
 }
 #endif
Index: chromium-72.0.3626.53/components/viz/common/gl_scaler.cc
===================================================================
--- chromium-72.0.3626.53.orig/components/viz/common/gl_scaler.cc
+++ chromium-72.0.3626.53/components/viz/common/gl_scaler.cc
@@ -693,6 +693,8 @@ const char* GLScaler::GetShaderName(GLSc
     CASE_RETURN_SHADER_STR(I422_NV61_MRT);
     CASE_RETURN_SHADER_STR(DEINTERLEAVE_PAIRWISE_MRT);
 #undef CASE_RETURN_SHADER_STR
+  default:
+    __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/content/renderer/media/stream/media_stream_constraints_util_audio.cc
===================================================================
--- chromium-72.0.3626.53.orig/content/renderer/media/stream/media_stream_constraints_util_audio.cc
+++ chromium-72.0.3626.53/content/renderer/media/stream/media_stream_constraints_util_audio.cc
@@ -414,6 +414,8 @@ class EchoCancellationContainer {
         return blink::kEchoCancellationTypeSystem;
       case EchoCancellationType::kEchoCancellationDisabled:
         return base::nullopt;
+      default:
+	__builtin_abort ();
     }
   }
 
Index: chromium-72.0.3626.53/services/network/mdns_responder.cc
===================================================================
--- chromium-72.0.3626.53.orig/services/network/mdns_responder.cc
+++ chromium-72.0.3626.53/services/network/mdns_responder.cc
@@ -435,6 +435,8 @@ class MdnsResponderManager::SocketHandle
       case MdnsResponseSendOption::ResponseClass::UNSPECIFIED:
         NOTREACHED();
         return RateLimitScheme::PER_RESPONSE;
+      default:
+	__builtin_abort ();
     }
   }
   // Returns null if the computed delay exceeds kMaxScheduledDelay and the next
Index: chromium-72.0.3626.53/services/network/resource_scheduler.cc
===================================================================
--- chromium-72.0.3626.53.orig/services/network/resource_scheduler.cc
+++ chromium-72.0.3626.53/services/network/resource_scheduler.cc
@@ -93,6 +93,8 @@ const char* RequestStartTriggerString(Re
       return "REQUEST_REPRIORITIZED";
     case RequestStartTrigger::LONG_QUEUED_REQUESTS_TIMER_FIRED:
       return "LONG_QUEUED_REQUESTS_TIMER_FIRED";
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/core/css/properties/longhands/custom_property.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/core/css/properties/longhands/custom_property.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/core/css/properties/longhands/custom_property.cc
@@ -97,6 +97,8 @@ const CSSValue* CustomProperty::ParseSin
       if (registration_ && !ParseTyped(range, context, local_context))
         return nullptr;
       return ParseUntyped(range, context, local_context);
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/exported/indexed_db_key_builder.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/exported/indexed_db_key_builder.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/exported/indexed_db_key_builder.cc
@@ -73,6 +73,8 @@ IndexedDBKey IndexedDBKeyBuilder::Build(
     case kWebIDBKeyTypeMin:
       NOTREACHED();
       return IndexedDBKey();
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -105,6 +107,8 @@ WebIDBKey WebIDBKeyBuilder::Build(const
     case kWebIDBKeyTypeMin:
       NOTREACHED();
       return WebIDBKey::CreateInvalid();
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -137,6 +141,8 @@ WebIDBKey WebIDBKeyBuilder::Build(const
     case kWebIDBKeyTypeMin:
       NOTREACHED();
       return WebIDBKey::CreateInvalid();
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -179,6 +185,8 @@ IndexedDBKeyPath IndexedDBKeyPathBuilder
       return IndexedDBKeyPath(CopyArray(key_path.Array()));
     case kWebIDBKeyPathTypeNull:
       return IndexedDBKeyPath();
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -195,6 +203,8 @@ WebIDBKeyPath WebIDBKeyPathBuilder::Buil
     }
     case kWebIDBKeyPathTypeNull:
       return WebIDBKeyPath::CreateNull();
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/peerconnection/rtc_peer_connection.cc
@@ -570,6 +570,8 @@ RTCSetSessionDescriptionOperation GetRTC
         return RTCSetSessionDescriptionOperation::kSetRemoteDescriptionAnswer;
       return RTCSetSessionDescriptionOperation::
           kSetRemoteDescriptionInvalidType;
+    default:
+      __builtin_abort ();
   }
 }
 
@@ -595,6 +597,8 @@ SdpUsageCategory DeduceSdpUsageCategory(
               sdp_semantics == webrtc::SdpSemantics::kUnifiedPlan)
                  ? SdpUsageCategory::kSafe
                  : SdpUsageCategory::kUnsafe;
+    default:
+      __builtin_abort ();
   }
 }
 
Index: chromium-72.0.3626.53/third_party/blink/renderer/modules/service_worker/wait_until_observer.cc
===================================================================
--- chromium-72.0.3626.53.orig/third_party/blink/renderer/modules/service_worker/wait_until_observer.cc
+++ chromium-72.0.3626.53/third_party/blink/renderer/modules/service_worker/wait_until_observer.cc
@@ -194,6 +194,8 @@ bool WaitUntilObserver::IsEventActive(Sc
     case EventDispatchState::kDispatched:
     case EventDispatchState::kFailed:
       return false;
+    default:
+      __builtin_abort ();
   }
   NOTREACHED();
 }