Add OnDisplayMetricsChanged in DisplayObserver.

chrome/browser/ui/webui/options/chromeos/display_overscan_handler.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_DISPLAY_OVERSCAN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_DISPLAY_OVERSCAN_HANDLER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
 #include "ui/gfx/display_observer.h"
@@ skipping 16 matching lines @@
   virtual ~DisplayOverscanHandler();
 
   // OptionsPageUIHandler implementation.
   virtual void GetLocalizedValues(
       base::DictionaryValue* localized_strings) OVERRIDE;
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
   // gfx::DisplayObserver implementation.
-  virtual void OnDisplayBoundsChanged(const gfx::Display& display) OVERRIDE;
   virtual void OnDisplayAdded(const gfx::Display& new_display) OVERRIDE;
   virtual void OnDisplayRemoved(const gfx::Display& old_display) OVERRIDE;
+  virtual void OnDisplayMetricsChanged(const gfx::Display& display,
+                                       uint32_t metrics) OVERRIDE;
 
  private:
   // Handlers of JS messages.
   void HandleStart(const base::ListValue* args);
   void HandleCommit(const base::ListValue* unused_args);
   void HandleReset(const base::ListValue* unused_args);
   void HandleCancel(const base::ListValue* unused_args);
   void HandleMove(const base::ListValue* args);
   void HandleResize(const base::ListValue* args);
 
   scoped_ptr<OverscanCalibrator> overscan_calibrator_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayOverscanHandler);
 };
 
 }  // namespace options
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_DISPLAY_OVERSCAN_HANDLER_H_