Move Extension into extensions namespace

chrome/browser/speech/extension_api/tts_extension_api_controller.cc

 // 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.
 
 #include "chrome/browser/speech/extension_api/tts_extension_api_controller.h"
 
 #include <string>
 #include <vector>
 
 #include "base/float_util.h"
@@ skipping 154 matching lines @@
 void ExtensionTtsController::SpeakOrEnqueue(Utterance* utterance) {
   if (IsSpeaking() && utterance->can_enqueue()) {
     utterance_queue_.push(utterance);
   } else {
     Stop();
     SpeakNow(utterance);
   }
 }
 
 void ExtensionTtsController::SpeakNow(Utterance* utterance) {
-  const Extension* extension;
+  const extensions::Extension* extension;
   size_t voice_index;
   if (GetMatchingExtensionVoice(utterance, &extension, &voice_index)) {
     current_utterance_ = utterance;
     utterance->set_extension_id(extension->id());
 
     ExtensionTtsEngineSpeak(utterance, extension, voice_index);
 
     const std::set<std::string> event_types =
         extension->tts_voices()[voice_index].event_types;
     bool sends_end_event =
@@ skipping 141 matching lines @@
 
 int ExtensionTtsController::QueueSize() {
   return static_cast<int>(utterance_queue_.size());
 }
 
 ExtensionTtsPlatformImpl* ExtensionTtsController::GetPlatformImpl() {
   if (!platform_impl_)
     platform_impl_ = ExtensionTtsPlatformImpl::GetInstance();
   return platform_impl_;
 }