MediaStream API: Changing the device enumeration to be async

Source/core/platform/mediastream/MediaStreamCenter.h

 /*
  * Copyright (C) 2011 Ericsson AB. All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 19 matching lines @@
  */
 
 #ifndef MediaStreamCenter_h
 #define MediaStreamCenter_h
 
 #include "modules/mediastream/SourceInfo.h"
 #include "public/platform/WebVector.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/text/WTFString.h"
 
-namespace WebKit {
-class WebSourceInfo;
-}
-
 namespace WebCore {
 
 class MediaStreamComponent;
 class MediaStreamDescriptor;
 class MediaStreamSourcesQueryClient;
+class MediaStreamTrackSourcesRequest;
 
 class MediaStreamCenter {
 public:
     virtual ~MediaStreamCenter();
 
     static MediaStreamCenter& instance();
 
     virtual void queryMediaStreamSources(PassRefPtr<MediaStreamSourcesQueryClient>) = 0;
-    virtual bool getSourceInfos(const String& url, WebKit::WebVector<WebKit::WebSourceInfo>&) = 0;
+    virtual bool getMediaStreamTrackSources(PassRefPtr<MediaStreamTrackSourcesRequest>) = 0;
 
     // Calls from the DOM objects to notify the platform
     virtual void didSetMediaStreamTrackEnabled(MediaStreamDescriptor*, MediaStreamComponent*) = 0;
     virtual bool didAddMediaStreamTrack(MediaStreamDescriptor*, MediaStreamComponent*) = 0;
     virtual bool didRemoveMediaStreamTrack(MediaStreamDescriptor*, MediaStreamComponent*) = 0;
     virtual void didStopLocalMediaStream(MediaStreamDescriptor*) = 0;
     virtual void didCreateMediaStream(MediaStreamDescriptor*) = 0;
 
 protected:
     MediaStreamCenter();
 
     void endLocalMediaStream(MediaStreamDescriptor*);
 };
 
 } // namespace WebCore
 
 #endif // MediaStreamCenter_h