Record Chrome trace events in tcmalloc heap profiles

chrome/browser/chrome_browser_main_linux.cc

 // 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.
 
 #include "chrome/browser/chrome_browser_main_linux.h"
 
+#include "base/debug/trace_memory.h"
+
 #if !defined(OS_CHROMEOS)
 #include "chrome/browser/storage_monitor/storage_monitor_linux.h"
 #include "content/public/browser/browser_thread.h"
 #endif
 
 #if defined(USE_LINUX_BREAKPAD)
 #include <stdlib.h>
 
 #include "base/command_line.h"
 #include "base/linux_util.h"
@@ skipping 109 matching lines @@
 #endif
 
 #if !defined(OS_CHROMEOS)
   const base::FilePath kDefaultMtabPath("/etc/mtab");
   storage_monitor_.reset(new chrome::StorageMonitorLinux(kDefaultMtabPath));
 #endif
 
   ChromeBrowserMainPartsPosix::PreProfileInit();
 }
 
+void ChromeBrowserMainPartsLinux::PreMainMessageLoopRun() {
+  ChromeBrowserMainPartsPosix::PreMainMessageLoopRun();
+
+  // TODO(jamescook): Only start this when tracing is flipped on.
+  base::TraceMemoryStart();
+}
+
 void ChromeBrowserMainPartsLinux::PostMainMessageLoopRun() {
   ChromeBrowserMainPartsPosix::PostMainMessageLoopRun();
 
 #if !defined(OS_CHROMEOS)
   // Delete it now. Otherwise the FILE thread would be gone when we try to
   // release it in the dtor and Valgrind would report a leak on almost every
   // single browser_test.
   storage_monitor_.reset();
 #endif
+
+  base::TraceMemoryStop();
 }