Add OVERRIDE to all RenderWidgetHostView implementations

chrome/browser/renderer_host/render_widget_host_view_mac.h

 // Copyright (c) 2011 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_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 #pragma once
 
 #import <Cocoa/Cocoa.h>
 
@@ skipping 211 matching lines @@
       const std::vector<ViewHostMsg_AccessibilityNotification_Params>& params
       ) OVERRIDE;
 
   virtual void PluginFocusChanged(bool focused, int plugin_id) OVERRIDE;
   virtual void StartPluginIme() OVERRIDE;
   virtual bool PostProcessEventForPluginIme(
       const NativeWebKeyboardEvent& event) OVERRIDE;
 
   // Methods associated with GPU-accelerated plug-in instances and the
   // accelerated compositor.
-  virtual gfx::PluginWindowHandle AllocateFakePluginWindowHandle(bool opaque,
-                                                                 bool root);
-  virtual void DestroyFakePluginWindowHandle(gfx::PluginWindowHandle window);
+  virtual gfx::PluginWindowHandle AllocateFakePluginWindowHandle(
+      bool opaque, bool root) OVERRIDE;
+  virtual void DestroyFakePluginWindowHandle(
+      gfx::PluginWindowHandle window) OVERRIDE;
 
   // Exposed for testing.
   AcceleratedPluginView* ViewForPluginWindowHandle(
       gfx::PluginWindowHandle window);
 
   // Helper to do the actual cleanup after a plugin handle has been destroyed.
   // Required because DestroyFakePluginWindowHandle() isn't always called for
   // all handles (it's e.g. not called on navigation, when the RWHVMac gets
   // destroyed anyway).
   void DeallocFakePluginWindowHandle(gfx::PluginWindowHandle window);
@@ skipping 143 matching lines @@
   // hidden until the software backing store has been updated. This variable is
   // set when the gpu widget needs to be hidden once a paint is completed.
   bool needs_gpu_visibility_update_after_repaint_;
 
   gfx::PluginWindowHandle compositing_surface_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_