Automatically trigger installation of high-quality speech synthesis extension.

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 263 matching lines @@
   // any.
   void OnTtsEvent(int utterance_id,
                   TtsEventType event_type,
                   int char_index,
                   const std::string& error_message);
 
   // Return a list of all available voices, including the native voice,
   // if supported, and all voices registered by extensions.
   void GetVoices(Profile* profile, std::vector<VoiceData>* out_voices);
 
-  // Called by TtsExtensionLoaderChromeOs::LoadTtsExtension when it
-  // finishes loading the built-in TTS component extension.
-  void RetrySpeakingQueuedUtterances();
-
   // Called by the extension system or platform implementation when the
   // list of voices may have changed and should be re-queried.
   void VoicesChanged();
 
   // Add a delegate that wants to be notified when the set of voices changes.
   void AddVoicesChangedDelegate(VoicesChangedDelegate* delegate);
 
   // Remove delegate that wants to be notified when the set of voices changes.
   void RemoveVoicesChangedDelegate(VoicesChangedDelegate* delegate);
 
@@ skipping 43 matching lines @@
   std::set<VoicesChangedDelegate*> voices_changed_delegates_;
 
   // A pointer to the platform implementation of text-to-speech, for
   // dependency injection.
   TtsPlatformImpl* platform_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(TtsController);
 };
 
 #endif  // CHROME_BROWSER_SPEECH_TTS_CONTROLLER_H_