Reland of Use spec-compliant algorithm to select video devices in getUserMedia.

content/renderer/media/media_stream_dispatcher.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_RENDERER_MEDIA_MEDIA_STREAM_DISPATCHER_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DISPATCHER_H_
 
 #include <list>
 #include <map>
 #include <memory>
@@ skipping 27 matching lines @@
   explicit MediaStreamDispatcher(RenderFrame* render_frame);
   ~MediaStreamDispatcher() override;
 
   // Request a new media stream to be created.
   // This can be used either by WebKit or a plugin.
   // Note: The event_handler must be valid for as long as the stream exists.
   virtual void GenerateStream(
       int request_id,
       const base::WeakPtr<MediaStreamDispatcherEventHandler>& event_handler,
       const StreamControls& controls,
-      const url::Origin& security_origin);
+      const url::Origin& security_origin,
+      bool is_processing_user_gesture);
 
   // Cancel the request for a new media stream to be created.
   virtual void CancelGenerateStream(
       int request_id,
       const base::WeakPtr<MediaStreamDispatcherEventHandler>& event_handler);
 
   // Stop a started device that has been requested by calling GenerateStream.
   virtual void StopStreamDevice(const StreamDeviceInfo& device_info);
 
   // Request to open a device.
@@ skipping 67 matching lines @@
   // been canceled.
   typedef std::list<Request> RequestList;
   RequestList requests_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DISPATCHER_H_