[Media] Add user gesture reporting for API calls to midi and media streams.

content/common/media/media_stream_messages.h

 // Copyright (c) 2012 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.
 
 // IPC messages for the media streaming.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 
 #include "content/common/content_export.h"
@@ skipping 95 matching lines @@
 // refactoring MediaStreamDependencyFactory.
 IPC_MESSAGE_CONTROL1(MediaStreamMsg_EnableAecDump,
                      IPC::PlatformFileForTransit /* file_handle */)
 
 // Tell the renderer to disable AEC dump.
 IPC_MESSAGE_CONTROL0(MediaStreamMsg_DisableAecDump)
 
 // Messages sent from the renderer to the browser.
 
 // Request a new media stream.
-IPC_MESSAGE_CONTROL4(MediaStreamHostMsg_GenerateStream,
+IPC_MESSAGE_CONTROL5(MediaStreamHostMsg_GenerateStream,
                      int /* render view id */,
                      int /* request id */,
                      content::StreamOptions /* components */,
-                     GURL /* security origin */)
+                     GURL /* security origin */,
+                     bool /* user_gesture */)
 
 // Request to cancel the request for a new media stream.
 IPC_MESSAGE_CONTROL2(MediaStreamHostMsg_CancelGenerateStream,
                      int /* render view id */,
                      int /* request id */)
 
 // Request to close a device that has been opened by GenerateStream.
 IPC_MESSAGE_CONTROL2(MediaStreamHostMsg_StopStreamDevice,
                      int /* render view id */,
                      std::string /*device_id*/)
@@ skipping 23 matching lines @@
                      int /* render view id */,
                      int /* request id */,
                      std::string /* device_id */,
                      content::MediaStreamType /* type */,
                      GURL /* security origin */)
 
 // Request to close a device.
 IPC_MESSAGE_CONTROL2(MediaStreamHostMsg_CloseDevice,
                      int /* render view id */,
                      std::string /*label*/)