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

chrome/renderer/speech_input_dispatcher.h

 // Copyright (c) 2010 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_RENDERER_SPEECH_INPUT_DISPATCHER_H_
 #define CHROME_RENDERER_SPEECH_INPUT_DISPATCHER_H_
 
 #include "base/basictypes.h"
 #include "chrome/common/speech_input_result.h"
 #include "ipc/ipc_message.h"
@@ skipping 13 matching lines @@
 class SpeechInputDispatcher : public WebKit::WebSpeechInputController {
  public:
   SpeechInputDispatcher(RenderView* render_view,
                         WebKit::WebSpeechInputListener* listener);
 
   // Called to possibly handle the incoming IPC message. Returns true if
   // handled. Called in render thread.
   bool OnMessageReceived(const IPC::Message& msg);
 
   // WebKit::WebSpeechInputController.
-  bool startRecognition(int request_id,
-                        const WebKit::WebRect& element_rect,
-                        const WebKit::WebString& language,
-                        const WebKit::WebString& grammar);
+  virtual bool startRecognition(int request_id,
+                                const WebKit::WebRect& element_rect,
+                                const WebKit::WebString& language,
+                                const WebKit::WebString& grammar);
 
-  void cancelRecognition(int request_id);
-  void stopRecording(int request_id);
+  virtual void cancelRecognition(int request_id);
+  virtual void stopRecording(int request_id);
 
  private:
   void OnSpeechRecognitionResult(
       int request_id, const speech_input::SpeechInputResultArray& result);
   void OnSpeechRecordingComplete(int request_id);
   void OnSpeechRecognitionComplete(int request_id);
 
   RenderView* render_view_;
   WebKit::WebSpeechInputListener* listener_;
 
   DISALLOW_COPY_AND_ASSIGN(SpeechInputDispatcher);
 };
 
 #endif  // CHROME_RENDERER_SPEECH_INPUT_DISPATCHER_H_