Add ProcessPowerCollector to audit power information.

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index a603ffd63d2a04aa5db9d6cef5282ba4f9019855..5734707eabcf29ee629030baeeb4126514d92e8d 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -69,6 +69,7 @@
 #include "chrome/browser/performance_monitor/performance_monitor.h"
 #include "chrome/browser/performance_monitor/startup_timer.h"
 #include "chrome/browser/plugins/plugin_prefs.h"
+#include "chrome/browser/power/process_power_collector.h"
 #include "chrome/browser/pref_service_flags_storage.h"
 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
 #include "chrome/browser/prefs/command_line_pref_store.h"
@@ -1547,6 +1548,11 @@ int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
 
   performance_monitor::PerformanceMonitor::GetInstance()->Initialize();
 
+#if !defined(OS_ANDROID)
+  process_power_collector_.reset(new ProcessPowerCollector);
+  process_power_collector_->Initialize();
+#endif
+
   PostBrowserStart();
 
   if (parameters().ui_task) {
@@ -1619,6 +1625,10 @@ void ChromeBrowserMainParts::PostMainMessageLoopRun() {
   // Disarm the startup hang detector time bomb if it is still Arm'ed.
   startup_watcher_->Disarm();
 
+  // Remove observers attached to D-Bus clients before DbusThreadManager is
+  // shut down.
+  process_power_collector_.reset();
+
   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
     chrome_extra_parts_[i]->PostMainMessageLoopRun();