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

chrome/browser/speech/speech_input_dispatcher_host.h

Index: chrome/browser/speech/speech_input_dispatcher_host.h
diff --git a/chrome/browser/speech/speech_input_dispatcher_host.h b/chrome/browser/speech/speech_input_dispatcher_host.h
index 85ca5c0d005692a15e0a86be105f1ed501be0f20..987bd5725caed303fa364bec7a4f27a1eadd977a 100644
--- a/chrome/browser/speech/speech_input_dispatcher_host.h
+++ b/chrome/browser/speech/speech_input_dispatcher_host.h
@@ -23,10 +23,10 @@ class SpeechInputDispatcherHost
   explicit SpeechInputDispatcherHost(int resource_message_filter_process_id);
 
   // SpeechInputManager::Delegate methods.
-  void SetRecognitionResult(int caller_id,
-                            const SpeechInputResultArray& result);
-  void DidCompleteRecording(int caller_id);
-  void DidCompleteRecognition(int caller_id);
+  virtual void SetRecognitionResult(int caller_id,
+                                    const SpeechInputResultArray& result);
+  virtual void DidCompleteRecording(int caller_id);
+  virtual void DidCompleteRecognition(int caller_id);
 
   // Called to possibly handle the incoming IPC message. Returns true if
   // handled.