Screensaver implementation for 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 4632067cad966ff81ad8f2e694e967cef7332d91..d2ea6570a02ff59a5412e9dec4a6f81957871de3 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -59,6 +59,7 @@
 #include "chrome/browser/chromeos/power/suspend_observer.h"
 #include "chrome/browser/chromeos/power/user_activity_notifier.h"
 #include "chrome/browser/chromeos/power/video_activity_notifier.h"
+#include "chrome/browser/chromeos/screensaver/screensaver_controller.h"
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
 #include "chrome/browser/chromeos/settings/owner_key_util.h"
 #include "chrome/browser/chromeos/system/statistics_provider.h"
@@ -602,6 +603,10 @@ void ChromeBrowserMainPartsChromeos::PostProfileInit() {
   output_observer_.reset(new OutputObserver());
   resume_observer_.reset(new ResumeObserver());
   screen_lock_observer_.reset(new ScreenLockObserver());
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableScreensaverExtensions)) {
+    screensaver_controller_.reset(new ScreensaverController());
+  }
   suspend_observer_.reset(new SuspendObserver());
   if (KioskModeSettings::Get()->IsKioskModeEnabled()) {
     power_state_override_ = new PowerStateOverride(