Pass origin to StartObservingMediaSinks.

chrome/browser/media/router/test_helper.h

Index: chrome/browser/media/router/test_helper.h
diff --git a/chrome/browser/media/router/test_helper.h b/chrome/browser/media/router/test_helper.h
index c3369e105e40f7c255856b68200c6cc8b6c8aae7..7726c805835a00c54f9c9637a2ef03cbe8884b3b 100644
--- a/chrome/browser/media/router/test_helper.h
+++ b/chrome/browser/media/router/test_helper.h
@@ -120,8 +120,10 @@ class MockMediaRouteProvider : public interfaces::MediaRouteProvider {
                     const JoinRouteCallback& callback));
   MOCK_METHOD1(DetachRoute, void(const mojo::String& route_id));
   MOCK_METHOD1(TerminateRoute, void(const mojo::String& route_id));
-  MOCK_METHOD1(StartObservingMediaSinks, void(const mojo::String& source));
-  MOCK_METHOD1(StopObservingMediaSinks, void(const mojo::String& source));
+  MOCK_METHOD2(StartObservingMediaSinks,
+               void(const mojo::String& source, const mojo::String& origin));
+  MOCK_METHOD2(StopObservingMediaSinks,
+               void(const mojo::String& source, const mojo::String& origin));
   MOCK_METHOD3(SendRouteMessage,
                void(const mojo::String& media_route_id,
                     const mojo::String& message,
@@ -152,10 +154,12 @@ class MockMediaRouteProvider : public interfaces::MediaRouteProvider {
 
 class MockMediaSinksObserver : public MediaSinksObserver {
  public:
-  MockMediaSinksObserver(MediaRouter* router, const MediaSource& source);
+  MockMediaSinksObserver(MediaRouter* router,
+                         const MediaSource& source);
   ~MockMediaSinksObserver() override;
 
-  MOCK_METHOD1(OnSinksReceived, void(const std::vector<MediaSink>& sinks));
+  MOCK_METHOD2(OnSinksReceived, void(const MediaSource& source,
+                                     const std::vector<MediaSink>& sinks));
 };
 
 class MockMediaRoutesObserver : public MediaRoutesObserver {