Explicitly specify whether to emit frame pointers by default.

base/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # HOW TO WRITE CONDITIONALS IN THIS FILE
 # ======================================
 #
 # In many other places, one would write a conditional that expresses all the
 # cases when a source file is used or unused, and then either add or subtract
 # it from the sources list in that case
@@ skipping 1618 matching lines @@
 
   allow_circular_includes_from = public_deps
 }
 
 buildflag_header("debugging_flags") {
   header = "debugging_flags.h"
   header_dir = "base/debug"
   flags = [
     "ENABLE_PROFILING=$enable_profiling",
     "ENABLE_MEMORY_TASK_PROFILER=$enable_memory_task_profiler",
+    "HAVE_TRACE_STACK_FRAME_POINTERS=$emit_frame_pointers_by_default",
   ]
 }
 
 # This is the subset of files from base that should not be used with a dynamic
 # library. Note that this library cannot depend on base because base depends on
 # base_static.
 static_library("base_static") {
   sources = [
     "base_switches.cc",
     "base_switches.h",
@@ skipping 1035 matching lines @@
 }
 
 fuzzer_test("base_json_correctness_fuzzer") {
   sources = [
     "json/correctness_fuzzer.cc",
   ]
   deps = [
     ":base",
   ]
 }