Move BrowserThread to content namespace.

content/browser/renderer_host/media/audio_input_renderer_host.h

 // 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.
 //
 // AudioInputRendererHost serves audio related requests from audio capturer
 // which lives inside the render process and provide access to audio hardware.
 //
 // OnCreateStream() request is only available in the low latency mode. It will
 // creates a shared memory, a SyncWriter and a AudioInputController for the
 // input stream.
@@ skipping 109 matching lines @@
   virtual void OnData(media::AudioInputController* controller,
                       const uint8* data,
                       uint32 size);
 
   // media_stream::AudioInputDeviceManagerEventHandler implementation.
   virtual void OnDeviceStarted(int session_id, int index);
   virtual void OnDeviceStopped(int session_id);
 
  private:
   // TODO(henrika): extend test suite (compare AudioRenderHost)
-  friend class BrowserThread;
+  friend class content::BrowserThread;
   friend class DeleteTask<AudioInputRendererHost>;
 
   virtual ~AudioInputRendererHost();
 
   // Methods called on IO thread ----------------------------------------------
 
   // Start the audio input device with the session id. If the device
   // starts successfully, it will trigger OnDeviceStarted() callback.
   void OnStartDevice(int stream_id, int session_id);
 
@@ skipping 71 matching lines @@
   AudioEntryMap audio_entries_;
 
   // A map of session IDs to audio session sources.
   typedef std::map<int, int> SessionEntryMap;
   SessionEntryMap session_entries_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioInputRendererHost);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_RENDERER_HOST_H_