Remove the dependency of Extension API from tts_chromeos

chrome/browser/speech/tts_controller_impl.h

 // Copyright 2014 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_IMPL_H_
 #define CHROME_BROWSER_SPEECH_TTS_CONTROLLER_IMPL_H_
 
 #include <queue>
 #include <set>
 #include <string>
@@ skipping 25 matching lines @@
                   const std::string& error_message) OVERRIDE;
   virtual void GetVoices(Profile* profile,
                          std::vector<VoiceData>* out_voices) OVERRIDE;
   virtual void RetrySpeakingQueuedUtterances() OVERRIDE;
   virtual void VoicesChanged() OVERRIDE;
   virtual void AddVoicesChangedDelegate(
       VoicesChangedDelegate* delegate) OVERRIDE;
   virtual void RemoveVoicesChangedDelegate(
       VoicesChangedDelegate* delegate) OVERRIDE;
   virtual void SetTtsEngineDelegate(TtsEngineDelegate* delegate) OVERRIDE;
+  virtual TtsEngineDelegate* GetTtsEngineDelegate() OVERRIDE;
   virtual void SetPlatformImpl(TtsPlatformImpl* platform_impl) OVERRIDE;
   virtual int QueueSize() OVERRIDE;
 
  protected:
   TtsControllerImpl();
   virtual ~TtsControllerImpl();
 
  private:
   // Get the platform TTS implementation (or injected mock).
   TtsPlatformImpl* GetPlatformImpl();
@@ skipping 35 matching lines @@
   // dependency injection.
   TtsPlatformImpl* platform_impl_;
 
   // The delegate that processes TTS requests with user-installed extensions.
   TtsEngineDelegate* tts_engine_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(TtsControllerImpl);
 };
 
 #endif  // CHROME_BROWSER_SPEECH_TTS_CONTROLLER_IMPL_H_