Revert r9861 to fix build

chrome/common/render_messages_internal.h

 // Copyright (c) 2006-2008 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <string>
 #include <vector>
@@ skipping 1091 matching lines @@
                       int /* id of this message */)
 
   // Get the list of proxies to use for |url|, as a semicolon delimited list
   // of "<TYPE> <HOST>:<PORT>" | "DIRECT". See also
   // PluginProcessHostMsg_ResolveProxy which does the same thing.
   IPC_SYNC_MESSAGE_CONTROL1_2(ViewHostMsg_ResolveProxy,
                               GURL /* url */,
                               int /* network error */,
                               std::string /* proxy list */)
 
-  // Request that got sent to browser for creating an audio output stream
-  IPC_MESSAGE_ROUTED2(ViewHostMsg_CreateAudioStream,
-                      int /* stream_id */,
-                      ViewHostMsg_Audio_CreateStream)
-
-  // Tell the browser the audio buffer prepared for stream
-  // (render_view_id, stream_id) is filled and is ready to be consumed.
-  IPC_MESSAGE_ROUTED1(ViewHostMsg_NotifyAudioPacketReady,
-                      int /* stream_id */)
-
-  // Start playing the audio stream specified by (render_view_id, stream_id).
-  IPC_MESSAGE_ROUTED1(ViewHostMsg_StartAudioStream,
-                      int /* stream_id */)
-
-  // Close an audio stream specified by (render_view_id, stream_id).
-  IPC_MESSAGE_ROUTED1(ViewHostMsg_CloseAudioStream,
-                      int /* stream_id */)
-
-  // Get audio volume of the stream specified by (render_view_id, stream_id).
-  IPC_MESSAGE_ROUTED1(ViewHostMsg_GetAudioVolume,
-                      int /* stream_id */)
-
-  // Set audio volume of the stream specified by (render_view_id, stream_id).
-  // TODO(hclam): change this to vector if we have channel numbers other than 2.
-  IPC_MESSAGE_ROUTED3(ViewHostMsg_SetAudioVolume,
-                      int /* stream_id */,
-                      double /* left_channel */,
-                      double /* right_channel */)
-
 IPC_END_MESSAGES(ViewHost)