Move audio messages to their own file.

content/renderer/audio_message_filter.h

 // 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.
 //
 // MessageFilter that handles audio messages and delegates them to audio
 // renderers. Created on render thread, AudioMessageFilter is operated on
 // IO thread (main thread of render process), it intercepts audio messages
 // and process them on IO thread since these messages are time critical.
 
 #ifndef CONTENT_RENDERER_AUDIO_MESSAGE_FILTER_H_
 #define CONTENT_RENDERER_AUDIO_MESSAGE_FILTER_H_
 #pragma once
 
 #include "base/gtest_prod_util.h"
 #include "base/id_map.h"
 #include "base/shared_memory.h"
 #include "base/sync_socket.h"
+#include "content/common/audio_stream_state.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "media/audio/audio_buffers_state.h"
 
-struct ViewMsg_AudioStreamState_Params;
-
 namespace base {
 class Time;
 }
 
 class AudioMessageFilter : public IPC::ChannelProxy::MessageFilter {
  public:
   class Delegate {
    public:
     // Called when an audio packet is requested from the browser process.
     virtual void OnRequestPacket(AudioBuffersState buffers_state) = 0;
 
     // Called when state of an audio stream has changed in the browser process.
-    virtual void OnStateChanged(
-        const ViewMsg_AudioStreamState_Params& state) = 0;
+    virtual void OnStateChanged(AudioStreamState state) = 0;
 
     // Called when an audio stream has been created in the browser process.
     virtual void OnCreated(base::SharedMemoryHandle handle, uint32 length) = 0;
 
     // Called when a low-latency audio stream has been created in the browser
     // process.
     virtual void OnLowLatencyCreated(base::SharedMemoryHandle handle,
                                      base::SyncSocket::Handle socket_handle,
                                      uint32 length) = 0;
 
@@ skipping 46 matching lines @@
 #if defined(OS_WIN)
                                  base::SyncSocket::Handle socket_handle,
 #else
                                  base::FileDescriptor socket_descriptor,
 #endif
                                  uint32 length);
 
 
   // Received when internal state of browser process' audio output device has
   // changed.
-  void OnStreamStateChanged(int stream_id,
-                            const ViewMsg_AudioStreamState_Params& state);
+  void OnStreamStateChanged(int stream_id, AudioStreamState state);
 
   // Notification of volume property of an audio output stream.
   void OnStreamVolume(int stream_id, double volume);
 
   // A map of stream ids to delegates.
   IDMap<Delegate> delegates_;
 
   IPC::Channel* channel_;
 
   int32 route_id_;
 
   MessageLoop* message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioMessageFilter);
 };
 
 #endif  // CONTENT_RENDERER_AUDIO_MESSAGE_FILTER_H_