Record Chrome trace events in tcmalloc heap profiles

content/browser/browser_main_loop.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_
 #define CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/browser_process_sub_thread.h"
 
 class CommandLine;
 
 namespace base {
 class HighResolutionTimerManager;
 class MessageLoop;
 class PowerMonitor;
 class SystemMonitor;
+namespace debug {
+class TraceMemoryController;
+}

[jar (doing other things), 2013/07/12 01:24:26]

nit: Namespace termination curlies should have comment like:

// namespace debug

Also applies to namespaces terminators below.

[James Cook, 2013/07/12 17:40:27]

Done, but are you sure you want me to do this?  Across wide swaths of Chrome
brief forward-declarations of classes do not use namespace terminator comments. 
This seems inconsistent with the rest of the code base, though I cannot find a
Google or Chromium C++ style guide reference specifically about namespace
comments for forward declarations.

 }
 
 namespace media {
 class AudioManager;
 class MIDIManager;
 }
 
 namespace net {
 class NetworkChangeNotifier;
 }
@@ skipping 110 matching lines @@
 #if !defined(OS_IOS)
   scoped_ptr<WebKitThread> webkit_thread_;
 #endif
   scoped_ptr<BrowserProcessSubThread> file_user_blocking_thread_;
   scoped_ptr<BrowserProcessSubThread> file_thread_;
   scoped_ptr<BrowserProcessSubThread> process_launcher_thread_;
   scoped_ptr<BrowserProcessSubThread> cache_thread_;
   scoped_ptr<BrowserProcessSubThread> io_thread_;
   scoped_ptr<base::Thread> indexed_db_thread_;
   scoped_ptr<MemoryObserver> memory_observer_;
+  scoped_ptr<base::debug::TraceMemoryController> trace_memory_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserMainLoop);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_