MediaStream API: Changing the device enumeration to be async

Source/core/platform/mediastream/MediaStreamCenter.h

Index: Source/core/platform/mediastream/MediaStreamCenter.h
diff --git a/Source/core/platform/mediastream/MediaStreamCenter.h b/Source/core/platform/mediastream/MediaStreamCenter.h
index c5fa2617e85cf4dc592922f7a09f0014e32cf858..9893ec88f2d1ac8694ef539e250f2f7d8df5ee9d 100644
--- a/Source/core/platform/mediastream/MediaStreamCenter.h
+++ b/Source/core/platform/mediastream/MediaStreamCenter.h
@@ -43,7 +43,6 @@ namespace WebKit {
 class WebMediaStream;
 class WebMediaStreamCenter;
 class WebMediaStreamTrack;
-class WebSourceInfo;
 }
 
 namespace WebCore {
@@ -51,6 +50,7 @@ namespace WebCore {
 class MediaStreamComponent;
 class MediaStreamDescriptor;
 class MediaStreamSourcesQueryClient;
+class MediaStreamTrackSourcesRequest;
 
 class MediaStreamCenter : public WebKit::WebMediaStreamCenterClient {
 public:
@@ -59,7 +59,7 @@ public:
     static MediaStreamCenter& instance();
 
     void queryMediaStreamSources(PassRefPtr<MediaStreamSourcesQueryClient>);
-    bool getSourceInfos(const String& url, WebKit::WebVector<WebKit::WebSourceInfo>&);
+    bool getMediaStreamTrackSources(PassRefPtr<MediaStreamTrackSourcesRequest>);
     void didSetMediaStreamTrackEnabled(MediaStreamDescriptor*, MediaStreamComponent*);
     bool didAddMediaStreamTrack(MediaStreamDescriptor*, MediaStreamComponent*);
     bool didRemoveMediaStreamTrack(MediaStreamDescriptor*, MediaStreamComponent*);