Begin adding support for tab mirroring via the MediaStream audio/video capturing

content/browser/renderer_host/media/media_stream_dispatcher_host.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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_DISPATCHER_HOST_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 36 matching lines @@
  protected:
   virtual ~MediaStreamDispatcherHost();
 
  private:
   friend class MockMediaStreamDispatcherHost;
 
   void OnGenerateStream(int render_view_id,
                         int page_request_id,
                         const StreamOptions& components,
                         const GURL& security_origin);
+  void OnGenerateStreamForDevice(int render_view_id,
+                                 int page_request_id,
+                                 const StreamOptions& components,
+                                 const std::string& device_id,
+                                 const GURL& security_origin);
   void OnCancelGenerateStream(int render_view_id,
                               int page_request_id);
   void OnStopGeneratedStream(int render_view_id, const std::string& label);
 
   void OnEnumerateDevices(int render_view_id,
                           int page_request_id,
                           media_stream::MediaStreamType type,
                           const GURL& security_origin);
 
   void OnOpenDevice(int render_view_id,
@@ skipping 13 matching lines @@
   typedef std::map<std::string, StreamRequest> StreamMap;
   // Streams generated for this host.
   StreamMap streams_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamDispatcherHost);
 };
 
 }  // namespace media_stream
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_DISPATCHER_HOST_H_