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 92a8eae2b3ed3e80a3db04ef51acd9ea5aaab5ba..674ca97a435ee3dff19d2918efaad2385eb09a37 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:
@@ -58,7 +58,7 @@ public:
 
     static MediaStreamCenter& instance();
 
-    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*);