Implement profiler log writing at shutdown

chrome/browser/chrome_browser_main.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 CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
 #define CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/metrics/field_trial.h"
 #include "base/tracked_objects.h"
 #include "chrome/browser/first_run/first_run.h"
 #include "chrome/browser/process_singleton.h"
+#include "chrome/browser/task_profiler/auto_tracking.h"
 #include "chrome/browser/ui/browser_init.h"
 #include "content/public/browser/browser_main_parts.h"
 #include "content/public/browser/browser_thread.h"
 
 class BrowserInit;
 class BrowserProcessImpl;
 class ChromeBrowserMainExtraParts;
 class FieldTrialSynchronizer;
 class HistogramSynchronizer;
 class MetricsService;
@@ skipping 126 matching lines @@
   scoped_ptr<StartupTimeBomb> startup_watcher_;
 
   // Create ShutdownWatcherHelper object for watching jank during shutdown.
   // Please keep |shutdown_watcher| as the first object constructed, and hence
   // it is destroyed last.
   scoped_ptr<ShutdownWatcherHelper> shutdown_watcher_;
 
   // Creating this object starts tracking the creation and deletion of Task
   // instance. This MUST be done before main_message_loop, so that it is
   // destroyed after the main_message_loop.
-  tracked_objects::AutoTracking tracking_objects_;
+  task_profiler::AutoTracking tracking_objects_;
 
   // Statistical testing infrastructure for the entire browser. NULL until
   // SetupMetricsAndFieldTrials is called.
   scoped_ptr<base::FieldTrialList> field_trial_list_;
 
   // Vector of additional ChromeBrowserMainExtraParts.
   // Parts are deleted in the inverse order they are added.
   std::vector<ChromeBrowserMainExtraParts*> chrome_extra_parts_;
 
   // Members initialized after / released before main_message_loop_ ------------
@@ skipping 44 matching lines @@
 // Records the time from our process' startup to the present time in
 // the UMA histogram |metric_name|.
 void RecordBrowserStartupTime();
 
 // Records a time value to an UMA histogram in the context of the
 // PreReadExperiment field-trial. This also reports to the appropriate
 // sub-histogram (_PreRead(Enabled|Disabled)).
 void RecordPreReadExperimentTime(const char* name, base::TimeDelta time);
 
 #endif  // CHROME_BROWSER_CHROME_BROWSER_MAIN_H_