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 546cbc7fa0996501f15268b10799b1f9eb8ddca5..3b90143c05a02782157f4d0a4809aa3b1dd523fb 100644
--- a/Source/core/platform/mediastream/MediaStreamCenter.h
+++ b/Source/core/platform/mediastream/MediaStreamCenter.h
@@ -37,15 +37,12 @@
 #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:
@@ -54,7 +51,7 @@ public:
     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;