Get rid of src_extension_id from TtsController.

chrome/browser/speech/tts_controller.h

 // Copyright (c) 2012 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_SPEECH_TTS_CONTROLLER_H_
 #define CHROME_BROWSER_SPEECH_TTS_CONTROLLER_H_
 
 #include <queue>
 #include <set>
 #include <string>
@@ skipping 133 matching lines @@
   // Finish an utterance without sending an event to the delegate.
   void Finish();
 
   // Getters and setters for the text to speak and other speech options.
   void set_text(const std::string& text) { text_ = text; }
   const std::string& text() const { return text_; }
 
   void set_options(const base::Value* options);
   const base::Value* options() const { return options_.get(); }
 
-  void set_src_extension_id(const std::string& src_extension_id) {
-    src_extension_id_ = src_extension_id;
-  }
-  const std::string& src_extension_id() { return src_extension_id_; }
-
   void set_src_id(int src_id) { src_id_ = src_id; }
   int src_id() { return src_id_; }
 
   void set_src_url(const GURL& src_url) { src_url_ = src_url; }
   const GURL& src_url() { return src_url_; }
 
   void set_voice_name(const std::string& voice_name) {
     voice_name_ = voice_name;
   }
   const std::string& voice_name() const { return voice_name_; }
@@ skipping 66 matching lines @@
   // responses.
   static int next_utterance_id_;
 
   // The text to speak.
   std::string text_;
 
   // The full options arg passed to tts.speak, which may include fields
   // other than the ones we explicitly parse, below.
   scoped_ptr<base::Value> options_;
 
-  // The extension ID of the extension that called speak() and should
-  // receive events.
-  std::string src_extension_id_;
-
   // The source extension's ID of this utterance, so that it can associate
   // events with the appropriate callback.
   int src_id_;
 
   // The URL of the page where the source extension called speak.
   GURL src_url_;
 
   // The delegate to be called when an utterance event is fired.
   base::WeakPtr<UtteranceEventDelegate> event_delegate_;
 
@@ skipping 75 matching lines @@
 
   // For unit testing.
   virtual void SetPlatformImpl(TtsPlatformImpl* platform_impl) = 0;
   virtual int QueueSize() = 0;
 
  protected:
   virtual ~TtsController() {}
 };
 
 #endif  // CHROME_BROWSER_SPEECH_TTS_CONTROLLER_H_