SetVolume and GetVolume take one volume instead of separate left and right vo...

chrome/common/render_messages_internal.h

 // Copyright (c) 2009 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 <map>
 #include <string>
@@ skipping 602 matching lines @@
                       int /* stream id */,
                       base::SharedMemoryHandle /* handle */,
                       int /* length */)
 
   // Notification message sent from AudioRendererHost to renderer for state
   // update after the renderer has requested a Create/Start/Close.
   IPC_MESSAGE_ROUTED2(ViewMsg_NotifyAudioStreamStateChanged,
                       int /* stream id */,
                       ViewMsg_AudioStreamState /* new state */)
 
-  IPC_MESSAGE_ROUTED3(ViewMsg_NotifyAudioStreamVolume,
+  IPC_MESSAGE_ROUTED2(ViewMsg_NotifyAudioStreamVolume,
                       int /* stream id */,
-                      double /* left channel */,
-                      double /* right channel */)
+                      double /* volume */)
 
   // Notification that a move or resize renderer's containing window has
   // started.
   IPC_MESSAGE_ROUTED0(ViewMsg_MoveOrResizeStarted)
 
   // The browser sends this message in response to all extension api calls.
   IPC_MESSAGE_ROUTED4(ViewMsg_ExtensionResponse,
                       int /* request_id */,
                       bool /* success */,
                       std::string /* response */,
@@ skipping 1031 matching lines @@
   // 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,
+  IPC_MESSAGE_ROUTED2(ViewHostMsg_SetAudioVolume,
                       int /* stream_id */,
-                      double /* left_channel */,
-                      double /* right_channel */)
+                      double /* volume */)
 
   // A renderer sends this message when an extension process starts an API
   // request. The browser will always respond with a ViewMsg_ExtensionResponse.
   IPC_MESSAGE_ROUTED4(ViewHostMsg_ExtensionRequest,
                       std::string /* name */,
                       ListValue /* argument */,
                       int /* callback id */,
                       bool /* has_callback */)
 
   // Notify the browser that this renderer added a listener to an event.
@@ skipping 293 matching lines @@
 
   // Asks the browser process to generate a keypair for grabbing a client
   // certificate from a CA (<keygen> tag), and returns the signed public
   // key and challenge string.
   IPC_SYNC_MESSAGE_CONTROL3_1(ViewHostMsg_Keygen,
                               uint32 /* key size index */,
                               std::string /* challenge string */,
                               GURL /* URL of requestor */,
                               std::string /* signed public key and challenge */)
 IPC_END_MESSAGES(ViewHost)