Update {virtual,override} to follow C++11 style in chrome.

chrome/browser/ui/views/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_VIEWS_PANELS_PANEL_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_VIEW_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/panels/native_panel.h"
 #include "ui/gfx/animation/animation_delegate.h"
@@ skipping 125 matching lines @@
   bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
 
   // Overridden from views::WidgetObserver:
   void OnWidgetDestroying(views::Widget* widget) override;
   void OnWidgetActivationChanged(views::Widget* widget, bool active) override;
   void OnWidgetBoundsChanged(views::Widget* widget,
                              const gfx::Rect& new_bounds) override;
 
   // Overridden from ui::HWNDMessageFilter:
 #if defined(OS_WIN)
-  virtual bool FilterMessage(HWND hwnd,
-                             UINT message,
-                             WPARAM w_param,
-                             LPARAM l_param,
-                             LRESULT* l_result) override;
+  bool FilterMessage(HWND hwnd,
+                     UINT message,
+                     WPARAM w_param,
+                     LPARAM l_param,
+                     LRESULT* l_result) override;
 #endif
 
   // Overridden from AnimationDelegate:
   void AnimationEnded(const gfx::Animation* animation) override;
   void AnimationProgressed(const gfx::Animation* animation) override;
 
   void UpdateLoadingAnimations(bool should_animate);
   void UpdateWindowTitle();
   void UpdateWindowIcon();
   void SetBoundsInternal(const gfx::Rect& bounds, bool animate);
@@ skipping 81 matching lines @@
 
 #if defined(OS_WIN)
   // 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_VIEWS_PANELS_PANEL_VIEW_H_