Added InitTts function to speech synthesis library

chrome/browser/chromeos/cros/speech_synthesis_library.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/browser/chromeos/cros/speech_synthesis_library.h"
 
 #include "base/message_loop.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "third_party/cros/chromeos_speech_synthesis.h"
 
 namespace chromeos {
 
 bool SpeechSynthesisLibraryImpl::Speak(const char* text) {
   return chromeos::Speak(text);
 }
 
 bool SpeechSynthesisLibraryImpl::SetSpeakProperties(const char* props) {
   return chromeos::SetSpeakProperties(props);
 }
 
 bool SpeechSynthesisLibraryImpl::StopSpeaking() {
   return chromeos::StopSpeaking();
 }
 
 bool SpeechSynthesisLibraryImpl::IsSpeaking() {
   return chromeos::IsSpeaking();
 }
 
+void SpeechSynthesisLibraryImpl::InitTts(InitStatusCallback callback) {
+  chromeos::InitTts(callback);
+}
+
 }  // namespace chromeos