Histograms - Support histograms for Plugins, GPU

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_
 
 #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/startup/startup_browser_creator.h"
 #include "content/public/browser/browser_main_parts.h"
 #include "content/public/browser/browser_thread.h"
 
 class BrowserProcessImpl;
 class ChromeBrowserMainExtraParts;
 class FieldTrialSynchronizer;
-class HistogramSynchronizer;
 class MetricsService;
 class PrefService;
 class Profile;
 class StartupBrowserCreator;
 class StartupTimeBomb;
 class ShutdownWatcherHelper;
 class TranslateManager;
 
 namespace chrome_browser {
 // For use by ShowMissingLocaleMessageBox.
@@ skipping 153 matching lines @@
   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_ ------------
 
   scoped_ptr<StartupBrowserCreator> browser_creator_;
   scoped_ptr<BrowserProcessImpl> browser_process_;
-  scoped_refptr<HistogramSynchronizer> histogram_synchronizer_;
   scoped_refptr<chrome_browser_metrics::TrackingSynchronizer>
       tracking_synchronizer_;
   scoped_ptr<ProcessSingleton> process_singleton_;
   scoped_ptr<first_run::MasterPrefs> master_prefs_;
   bool record_search_engine_;
   TranslateManager* translate_manager_;
   Profile* profile_;
   bool run_message_loop_;
   ProcessSingleton::NotifyResult notify_result_;
 
@@ skipping 35 matching lines @@
 // Records the time from our process' startup to the present time in
 // the Startup.BrowserMessageLoopStartTime UMA histogram.
 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_