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;
 class HighResolutionTimerManager;
 
 namespace base {
 class MessageLoop;
 class PowerMonitor;
 class SystemMonitor;
+namespace debug {
+class TraceMemoryTraceLogObserver;
+}
 }
 
 namespace media {
 class AudioManager;
 }
 
 namespace net {
 class NetworkChangeNotifier;
 }
 
@@ skipping 99 matching lines @@
   scoped_ptr<BrowserProcessSubThread> db_thread_;
 #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<MemoryObserver> memory_observer_;
+  scoped_ptr<base::debug::TraceMemoryTraceLogObserver> trace_memory_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserMainLoop);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_