Move BrowserThread to content namespace.

content/browser/renderer_host/media/audio_input_device_manager.cc

 // Copyright (c) 2011 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/browser/renderer_host/media/audio_input_device_manager.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/renderer_host/media/audio_input_device_manager_event_handler.h"
 #include "content/public/browser/browser_thread.h"
 #include "media/audio/audio_manager.h"
 
+using content::BrowserThread;
+
 namespace media_stream {
 
 const int AudioInputDeviceManager::kFakeOpenSessionId = 1;
 const int AudioInputDeviceManager::kInvalidSessionId = 0;
 const int AudioInputDeviceManager::kInvalidDevice = -1;
 const int AudioInputDeviceManager::kDefaultDeviceIndex = 0;
 
 // Starting id for the first capture session.
 const int kFirstSessionId = AudioInputDeviceManager::kFakeOpenSessionId + 1;
 
@@ skipping 291 matching lines @@
 bool AudioInputDeviceManager::HasEventHandler(int session_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   return event_handlers_.find(session_id) != event_handlers_.end();
 }
 
 MessageLoop* AudioInputDeviceManager::message_loop() {
   return audio_input_device_thread_.message_loop();
 }
 
 }  // namespace media_stream