Battery impact UMA

chrome/browser/chrome_browser_main.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.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 98 matching lines @@
 #include "components/signin/core/common/profile_management_switches.h"
 #include "components/startup_metric_utils/startup_metric_utils.h"
 #include "components/translate/content/common/cld_data_source.h"
 #include "components/translate/core/browser/translate_download_manager.h"
 #include "components/variations/variations_http_header_provider.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
+#include "content/public/browser/power_usage_monitor.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
 #include "grit/platform_locale_settings.h"
 #include "net/base/net_module.h"
 #include "net/base/sdch_manager.h"
 #include "net/cookies/cookie_monster.h"
 #include "net/http/http_network_layer.h"
 #include "net/http/http_stream_factory.h"
@@ skipping 1417 matching lines @@
           profile_->GetPrefs());
     }
 
     run_message_loop_ = true;
   } else {
     run_message_loop_ = false;
   }
   browser_creator_.reset();
 #endif  // !defined(OS_ANDROID)
 
+#if !defined(OS_LINUX)  // http://crbug.com/426393

[Daniel Erat, 2014/10/23 19:05:34]

i think that this incorrectly excludes chrome os, which does support
base::PowerMonitor now. this should probably instead be:

  #if !defined(OS_LINUX) || defined(OS_CHROMEOS)

[jeremy, 2014/10/27 08:25:11]

Done.

+  if (g_browser_process->metrics_service()->reporting_active())
+    content::StartPowerUsageMonitor();
+#endif  // !defined(OS_LINUX)
+
 #if !defined(OS_ANDROID)
   process_power_collector_.reset(new ProcessPowerCollector);
   process_power_collector_->Initialize();
 #endif
 
   PostBrowserStart();
 
   if (parameters().ui_task) {
     parameters().ui_task->Run();
     delete parameters().ui_task;
@@ skipping 110 matching lines @@
   chromeos::CrosSettings::Shutdown();
 #endif
 #endif
 }
 
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }