Reporting top cpu and memory consumers via rappor on chromeos

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index 490b417e70ad11c5082384f5fa05752402d3c966..19af19911c453f3954a8e1d0bd5ebc340c992de9 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -65,6 +65,7 @@
 #include "chrome/browser/chromeos/power/power_prefs.h"
 #include "chrome/browser/chromeos/power/renderer_freezer.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
+#include "chrome/browser/chromeos/resource_reporter/resource_reporter.h"
 #include "chrome/browser/chromeos/settings/device_oauth2_token_service_factory.h"
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
 #include "chrome/browser/chromeos/status/data_promo_notification.h"
@@ -386,6 +387,10 @@ void ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun() {
 
   wake_on_wifi_manager_.reset(new WakeOnWifiManager());
 
+  // We must start observing the MetricsService before it is started/stopped in
+  // ChromeBrowserMainPartsLinux::PreMainMessageLoopRun() below;
+  chromeos::ResourceReporter::StartObservingMetricsService();
+
   ChromeBrowserMainPartsLinux::PreMainMessageLoopRun();
 }
 
@@ -697,6 +702,8 @@ void ChromeBrowserMainPartsChromeos::PostBrowserStart() {
 
 // Shut down services before the browser process, etc are destroyed.
 void ChromeBrowserMainPartsChromeos::PostMainMessageLoopRun() {
+  chromeos::ResourceReporter::StopObservingMetricsService();
+
   BootTimesRecorder::Get()->AddLogoutTimeMarker("UIMessageLoopEnded", true);
 
   // Destroy the application name notifier for Kiosk mode.