Creates notifications for display resolution change.

chrome/browser/chromeos/display/display_preferences.cc

Index: chrome/browser/chromeos/display/display_preferences.cc
diff --git a/chrome/browser/chromeos/display/display_preferences.cc b/chrome/browser/chromeos/display/display_preferences.cc
index 168404ce39e35ed7d02732aa6c94771428f4f2c2..14c18ff04657ec8d0561b8e5bc685e32c988bdfe 100644
--- a/chrome/browser/chromeos/display/display_preferences.cc
+++ b/chrome/browser/chromeos/display/display_preferences.cc
@@ -8,6 +8,7 @@
 #include "ash/display/display_layout_store.h"
 #include "ash/display/display_manager.h"
 #include "ash/display/display_pref_util.h"
+#include "ash/display/resolution_notification_controller.h"
 #include "ash/shell.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
@@ -258,8 +259,12 @@ void RegisterDisplayLocalStatePrefs(PrefRegistrySimple* registry) {
 }
 
 void StoreDisplayPrefs() {
-  if (!IsValidUser())
+  // Do not store prefs when the confirmation dialog is shown.
+  if (!IsValidUser() ||
+      ash::Shell::GetInstance()->resolution_notification_controller()->
+          DoesNotificationTimeout()) {
     return;
+  }
   StoreCurrentDisplayLayoutPrefs();
   StoreCurrentDisplayProperties();
   StoreCurrentDisplayPowerState();