Add flag in device enumeration request to control label clearing and don't clear for pepper.

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 108 matching lines @@
 // Request to close a device that has been opened by GenerateStream.
 IPC_MESSAGE_CONTROL2(MediaStreamHostMsg_StopStreamDevice,
                      int /* render view id */,
                      std::string /*device_id*/)
 
 // Request to enumerate devices.
 IPC_MESSAGE_CONTROL2(MediaStreamHostMsg_GetSources,
                      int /* request id */,
                      GURL /* origin */)
 
-
 // Request to enumerate devices.
-// Used by Pepper.
-// TODO(vrk,wjia): Move this to pepper code.
-IPC_MESSAGE_CONTROL4(MediaStreamHostMsg_EnumerateDevices,
+// Used by Pepper and WebRTC.
+IPC_MESSAGE_CONTROL5(MediaStreamHostMsg_EnumerateDevices,
                      int /* render view id */,
                      int /* request id */,
                      content::MediaStreamType /* type */,
-                     GURL /* security origin */)
+                     GURL /* security origin */,
+                     bool /* hide_labels_if_no_access */)
 
 // Request to stop enumerating devices.
 IPC_MESSAGE_CONTROL2(MediaStreamHostMsg_CancelEnumerateDevices,
                      int /* render view id */,
                      int /* request id */)
 
 // Request to open the device.
 IPC_MESSAGE_CONTROL5(MediaStreamHostMsg_OpenDevice,
                      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*/)