Resolve the problems where we can leak the system tray UI

content/browser/renderer_host/media/media_stream_manager.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.
 
 // MediaStreamManager is used to open/enumerate media capture devices (video
 // supported now). Call flow:
 // 1. GenerateStream is called when a render process wants to use a capture
 //    device.
 // 2. MediaStreamManager will ask MediaStreamDeviceSettings for permission to
 //    use devices and for which device to use.
@@ skipping 78 matching lines @@
   // Used to access AudioInputDeviceManager.
   AudioInputDeviceManager* audio_input_device_manager();
 
   // GenerateStream opens new media devices according to |components|. It
   // creates a new request which is identified by a unique |label| that's
   // returned to the caller.
   void GenerateStream(MediaStreamRequester* requester, int render_process_id,
                       int render_view_id, const StreamOptions& options,
                       const GURL& security_origin, std::string* label);
 
-  // Cancels all non-finished GenerateStream request, i.e. request for which
-  // StreamGenerated hasn't been called.
-  void CancelRequests(MediaStreamRequester* requester);
-
   // Cancel generate stream.
   void CancelGenerateStream(const std::string& label);
 
   // Closes generated stream.
   void StopGeneratedStream(const std::string& label);
 
   // Gets a list of devices of |type|.
   // The request is identified using |label|, which is pointing to a
   // std::string.
   // The request is persistent, which means the client keeps listening to
@@ skipping 119 matching lines @@
   // Hold a pointer to the IO loop to check we delete the device thread and
   // managers on the right thread.
   MessageLoop* io_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamManager);
 };
 
 }  // namespace media_stream
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_MANAGER_H_