Fix build.

chrome/browser/ui/panels/panel_view.h

 // Copyright (c) 2012 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_PANELS_PANEL_VIEW_H_
 #define CHROME_BROWSER_UI_PANELS_PANEL_VIEW_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/panels/native_panel.h"
 #include "ui/base/animation/animation_delegate.h"
@@ skipping 90 matching lines @@
  private:
   enum MouseDraggingState {
     NO_DRAGGING,
     DRAGGING_STARTED,
     DRAGGING_ENDED
   };
 
   // Overridden from views::WidgetDelegate:
   virtual void OnDisplayChanged() OVERRIDE;
   virtual void OnWorkAreaChanged() OVERRIDE;
-  virtual bool WillProcessWorkAreaChange() const;
+  virtual bool WillProcessWorkAreaChange() const OVERRIDE;
   virtual views::View* GetContentsView() OVERRIDE;
   virtual views::NonClientFrameView* CreateNonClientFrameView(
       views::Widget* widget) OVERRIDE;
   virtual bool CanResize() const OVERRIDE;
   virtual bool CanMaximize() const OVERRIDE;
   virtual views::Widget* GetWidget() OVERRIDE;
   virtual const views::Widget* GetWidget() const OVERRIDE;
   virtual string16 GetWindowTitle() const OVERRIDE;
   virtual gfx::ImageSkia GetWindowIcon() OVERRIDE;
   virtual void DeleteDelegate() OVERRIDE;
@@ skipping 71 matching lines @@
 
 #if defined(OS_WIN) && !defined(USE_ASH) && !defined(USE_AURA)
   // Used to provide custom taskbar thumbnail for Windows 7 and later.
   scoped_ptr<TaskbarWindowThumbnailerWin> thumbnailer_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(PanelView);
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_VIEW_H_