Decouple IPC::MessageFilter from IPC::Channel

chrome/browser/speech/tts_message_filter.h

Index: chrome/browser/speech/tts_message_filter.h
diff --git a/chrome/browser/speech/tts_message_filter.h b/chrome/browser/speech/tts_message_filter.h
index 629745cd4802242ab91374e4b64318fc663b1d3e..8ff3ec93c2632f6b58c35a321caa20bab69f27a9 100644
--- a/chrome/browser/speech/tts_message_filter.h
+++ b/chrome/browser/speech/tts_message_filter.h
@@ -25,7 +25,7 @@ class TtsMessageFilter
       const IPC::Message& message,
       content::BrowserThread::ID* thread) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-  virtual void OnChannelClosing() OVERRIDE;
+  virtual void OnSenderClosing() OVERRIDE;
 
   // UtteranceEventDelegate implementation.
   virtual void OnTtsEvent(Utterance* utterance,
@@ -45,7 +45,7 @@ class TtsMessageFilter
   void OnResume();
   void OnCancel();
 
-  void OnChannelClosingInUIThread();
+  void OnSenderClosingInUIThread();
 
   int render_process_id_;
   Profile* profile_;