Convert string16 to base::string16 in content.

content/public/test/fake_speech_recognition_manager.cc

 // Copyright (c) 2013 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 "content/public/test/fake_speech_recognition_manager.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/browser/speech_recognition_event_listener.h"
@@ skipping 97 matching lines @@
   did_cancel_all_ = true;
 }
 
 void FakeSpeechRecognitionManager::AbortAllSessionsForRenderView(
     int render_process_id, int render_view_id) {
   NOTREACHED();
 }
 
 bool FakeSpeechRecognitionManager::HasAudioInputDevices() { return true; }
 
-string16 FakeSpeechRecognitionManager::GetAudioInputDeviceModel() {
-  return string16();
+base::string16 FakeSpeechRecognitionManager::GetAudioInputDeviceModel() {
+  return base::string16();
 }
 
 int FakeSpeechRecognitionManager::GetSession(int render_process_id,
                                              int render_view_id,
                                              int request_id) const {
   return session_ctx_.render_process_id == render_process_id &&
          session_ctx_.render_view_id == render_view_id &&
          session_ctx_.request_id == request_id;
 }
 
@@ skipping 21 matching lines @@
   SpeechRecognitionResults results;
   results.push_back(result);
   listener_->OnRecognitionResults(session_id_, results);
   listener_->OnRecognitionEnd(session_id_);
   session_id_ = 0;
   listener_ = NULL;
   VLOG(1) << "Finished setting fake recognition result.";
 }
 
 }  // namespace content