Save display preference when all display configuration changes has been completed.

chrome/browser/chromeos/chrome_browser_main_chromeos.h

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.h
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.h b/chrome/browser/chromeos/chrome_browser_main_chromeos.h
index eec14c13a0dade43685843604105273b3e2255eb..e576ed1961af091a91ea87656197f0aa9629c66e 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.h
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.h
@@ -18,18 +18,18 @@ class ContactManager;
 namespace chromeos {
 
 class BrightnessObserver;
+class DisplayConfigurationObserver;
 class KioskAppLauncher;
 class MagnificationManager;
 class OutputObserver;
 class PowerButtonObserver;
 class PowerStateOverride;
-class PrimaryDisplaySwitchObserver;
-class StorageMonitorCros;
 class ResumeObserver;
 class ScreenDimmingObserver;
 class ScreenLockObserver;
 class ScreensaverController;
 class SessionManagerObserver;
+class StorageMonitorCros;
 class SuspendObserver;
 class UserActivityNotifier;
 class VideoActivityNotifier;
@@ -75,6 +75,7 @@ class ChromeBrowserMainPartsChromeos : public ChromeBrowserMainPartsLinux {
 
   scoped_ptr<contacts::ContactManager> contact_manager_;
   scoped_ptr<BrightnessObserver> brightness_observer_;
+  scoped_ptr<DisplayConfigurationObserver> display_configuration_observer_;
   scoped_ptr<default_app_order::ExternalLoader> app_order_loader_;
   scoped_ptr<OutputObserver> output_observer_;
   scoped_ptr<SuspendObserver> suspend_observer_;
@@ -83,7 +84,6 @@ class ChromeBrowserMainPartsChromeos : public ChromeBrowserMainPartsLinux {
   scoped_ptr<ScreensaverController> screensaver_controller_;
   scoped_ptr<PowerButtonObserver> power_button_observer_;
   scoped_refptr<PowerStateOverride> power_state_override_;
-  scoped_ptr<PrimaryDisplaySwitchObserver> primary_display_switch_observer_;
   scoped_ptr<UserActivityNotifier> user_activity_notifier_;
   scoped_ptr<VideoActivityNotifier> video_activity_notifier_;
   scoped_ptr<ScreenDimmingObserver> screen_dimming_observer_;