Remove the dependency of Extension API from tts_chromeos

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 80 matching lines @@
 
   // Stop speaking the given utterance by sending an event to the target
   // associated with this utterance.
   virtual void Stop(Utterance* utterance) = 0;
 
   // Pause in the middle of speaking this utterance.
   virtual void Pause(Utterance* utterance) = 0;
 
   // Resume speaking this utterance.
   virtual void Resume(Utterance* utterance) = 0;
+
+  // Load the built-in component extension for ChromeOS.
+  virtual bool LoadBuiltInTtsExtension(Profile* profile) = 0;
 };
 
 // Class that wants to receive events on utterances.
 class UtteranceEventDelegate {
  public:
   virtual ~UtteranceEventDelegate() {}
   virtual void OnTtsEvent(Utterance* utterance,
                           TtsEventType event_type,
                           int char_index,
                           const std::string& error_message) = 0;
@@ skipping 207 matching lines @@
   // Add a delegate that wants to be notified when the set of voices changes.
   virtual void AddVoicesChangedDelegate(VoicesChangedDelegate* delegate) = 0;
 
   // Remove delegate that wants to be notified when the set of voices changes.
   virtual void RemoveVoicesChangedDelegate(VoicesChangedDelegate* delegate) = 0;
 
   // Set the delegate that processes TTS requests with user-installed
   // extensions.
   virtual void SetTtsEngineDelegate(TtsEngineDelegate* delegate) = 0;
 
+  // Get the delegate that processes TTS requests with user-installed
+  // extensions.
+  virtual TtsEngineDelegate* GetTtsEngineDelegate() = 0;
+
   // For unit testing.
   virtual void SetPlatformImpl(TtsPlatformImpl* platform_impl) = 0;
   virtual int QueueSize() = 0;
 
  protected:
   virtual ~TtsController() {}
 };
 
 #endif  // CHROME_BROWSER_SPEECH_TTS_CONTROLLER_H_