Add ProcessPowerCollector to audit power information.

chrome/browser/chrome_browser_main.h

Index: chrome/browser/chrome_browser_main.h
diff --git a/chrome/browser/chrome_browser_main.h b/chrome/browser/chrome_browser_main.h
index a856a2b7f392bb7f850a375bfef0c86ccc06ea68..21138a06cf11dc25ed0cc4a979f255af55c4127a 100644
--- a/chrome/browser/chrome_browser_main.h
+++ b/chrome/browser/chrome_browser_main.h
@@ -23,6 +23,7 @@ class ChromeBrowserMainExtraParts;
 class FieldTrialSynchronizer;
 class MetricsService;
 class PrefService;
+class ProcessPowerCollector;
 class Profile;
 class StartupBrowserCreator;
 class StartupTimeBomb;
@@ -150,6 +151,11 @@ class ChromeBrowserMainParts : public content::BrowserMainParts {
 
   ChromeBrowserFieldTrials browser_field_trials_;
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+  // A monitor for attributing power consumption to origins.
+  scoped_ptr<ProcessPowerCollector> process_power_collector_;
+#endif
+
   // Vector of additional ChromeBrowserMainExtraParts.
   // Parts are deleted in the inverse order they are added.
   std::vector<ChromeBrowserMainExtraParts*> chrome_extra_parts_;