Add Fade-out/Fade-in animation during output-configuration change.

chrome/browser/ui/webui/options2/chromeos/display_options_handler.h

Index: chrome/browser/ui/webui/options2/chromeos/display_options_handler.h
diff --git a/chrome/browser/ui/webui/options2/chromeos/display_options_handler.h b/chrome/browser/ui/webui/options2/chromeos/display_options_handler.h
index 05e438d2123411bac5a20e887ea7c9cc2a11854a..482610f537cdc4ef80d9eb41c31308e7af02ac81 100644
--- a/chrome/browser/ui/webui/options2/chromeos/display_options_handler.h
+++ b/chrome/browser/ui/webui/options2/chromeos/display_options_handler.h
@@ -46,6 +46,13 @@ class DisplayOptionsHandler : public ::options2::OptionsPageUIHandler,
   // Sends the current display information to the web_ui of options page.
   void SendDisplayInfo();
 
+  // Called when the fade-out animation for mirroring status change is finished.
+  void FadeOutForMirroringFinished(bool is_mirroring);
+
+  // Called when the fade-out animation for secondary display layout change is
+  // finished.
+  void FadeOutForDisplayLayoutFinished(int layout);
+
   // Handlers of JS messages.
   void HandleDisplayInfo(const base::ListValue* unused_args);
   void HandleMirroring(const base::ListValue* args);