Add the "virtual" keyword on method overrides that are missing it.

chrome/browser/renderer_host/render_widget_host.h

 // Copyright (c) 2009 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_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_H_
 #pragma once
 
 #include <deque>
 #include <string>
@@ skipping 165 matching lines @@
   // Tells the renderer to die and then calls Destroy().
   virtual void Shutdown();
 
   // Manual RTTI FTW. We are not hosting a web page.
   virtual bool IsRenderView() const { return false; }
 
   // IPC::Channel::Listener
   virtual void OnMessageReceived(const IPC::Message& msg);
 
   // Sends a message to the corresponding object in the renderer.
-  bool Send(IPC::Message* msg);
+  virtual bool Send(IPC::Message* msg);
 
   // Called to notify the RenderWidget that it has been hidden or restored from
   // having been hidden.
   void WasHidden();
   void WasRestored();
 
   // Called to notify the RenderWidget that it has been resized.
   void WasResized();
 
   // Called to notify the RenderWidget that its associated native window got
@@ skipping 483 matching lines @@
   // but the Char event generated by alt-2 may also activate a HTML element
   // if its accesskey happens to be "2", then the user may get confused when
   // switching back to the original tab, because the content may already be
   // changed.
   bool suppress_next_char_events_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_H_