Reducing symbol_level is a kludge and should have no effect on generated code.

--- src/base/BUILD.gn.orig
+++ src/base/BUILD.gn
@@ -2531,11 +2531,6 @@ buildflag_header("debugging_buildflags")
   enable_commandline_sequence_checks =
       (is_debug || dcheck_always_on) && !is_android
 
-  if (enable_stack_trace_line_numbers) {
-    assert(
-        symbol_level > 0,
-        "symbol_level must be set to greater than 0 for source line numbers.")
-  }
 
   flags = [
     "DCHECK_IS_CONFIGURABLE=$dcheck_is_configurable",
--- src/build/config/logging.gni.orig
+++ src/build/config/logging.gni
@@ -11,5 +11,5 @@ declare_args() {
   enable_log_error_not_reached =
       is_chromeos_ash && !(is_debug || dcheck_always_on)
 
-  enable_stack_trace_line_numbers = symbol_level > 0
+  enable_stack_trace_line_numbers = true
 }