[Media Router] Add origins to sink query results.

chrome/browser/media/router/presentation_media_sinks_observer.h

Index: chrome/browser/media/router/presentation_media_sinks_observer.h
diff --git a/chrome/browser/media/router/presentation_media_sinks_observer.h b/chrome/browser/media/router/presentation_media_sinks_observer.h
index 055713820f1844ff550d45b337ee6086789bd4a1..2111cd821dffdc9b67c4457001ee30a9b7792abd 100644
--- a/chrome/browser/media/router/presentation_media_sinks_observer.h
+++ b/chrome/browser/media/router/presentation_media_sinks_observer.h
@@ -27,11 +27,13 @@ class PresentationMediaSinksObserver : public MediaSinksObserver {
   // |router|: Media router that publishes sink query results.
   // |listener|: Notified when sinks availability changes.
   // |source|: Filters available sink.
+  // |origin|: Origin of request.
   // Does not take ownership of |listener| or |router|.
   PresentationMediaSinksObserver(
       MediaRouter* router,
       content::PresentationScreenAvailabilityListener* listener,
-      const MediaSource& source);
+      const MediaSource& source,
+      const GURL& origin);
   ~PresentationMediaSinksObserver() override;
 
   // MediaSinksObserver implementation.