Pass origin to StartObservingMediaSinks.

chrome/browser/ui/webui/media_router/query_result_manager.h

Index: chrome/browser/ui/webui/media_router/query_result_manager.h
diff --git a/chrome/browser/ui/webui/media_router/query_result_manager.h b/chrome/browser/ui/webui/media_router/query_result_manager.h
index f355b07d5acca7db49079ed984f77b093f9a62ee..b55be6aa7e311d1159cb203691fa0162a4939dff 100644
--- a/chrome/browser/ui/webui/media_router/query_result_manager.h
+++ b/chrome/browser/ui/webui/media_router/query_result_manager.h
@@ -39,9 +39,10 @@ struct SinksQueryResult;
 //   QueryResultManager result_manager(router);
 //   result_manager.AddObserver(observer);
 //   result_manager.StartSinksQuery(MediaCastMode::DEFAULT,
-//       MediaSourceForPresentationUrl("http://google.com"));
+//       MediaSourceForPresentationUrl("http://google.com"),

[mark a. foltz, 2016/03/03 22:58:37]

Make the presentation URL different from the origin, for clarity.

[matt.boetger, 2016/03/04 00:22:11]

Done.

+//       GURL("http://google.com"));
 //   result_manager.StartSinksQuery(MediaCastMode::TAB_MIRROR,
-//       MediaSourceForTab(123));
+//       MediaSourceForTab(123), GURL(""));

[mark a. foltz, 2016/03/03 22:58:37]

When would a sinks query not pass an origin?

[matt.boetger, 2016/03/04 00:22:11]

For tabs.

 //   ...
 //   [Updates will be received by observer via OnResultsUpdated()]
 //   ...
@@ -83,7 +84,8 @@ class QueryResultManager {
   // |cast_mode|, it is stopped.
   //
   // If |source| is empty, no new queries are begun.
-  void StartSinksQuery(MediaCastMode cast_mode, const MediaSource& source);
+  void StartSinksQuery(MediaCastMode cast_mode,
+                       const MediaSource& source);
 
   // Stops notifying observers for |cast_mode|.
   void StopSinksQuery(MediaCastMode cast_mode);