Pass origin to StartObservingMediaSinks.

chrome/test/media_router/test_media_sinks_observer.cc

Index: chrome/test/media_router/test_media_sinks_observer.cc
diff --git a/chrome/test/media_router/test_media_sinks_observer.cc b/chrome/test/media_router/test_media_sinks_observer.cc
index c4a9fce51dcfaa7085133f3cc6fea7aac5737497..689c67cec3b6bd29c12e2f76d19f34f84bfcbc4a 100644
--- a/chrome/test/media_router/test_media_sinks_observer.cc
+++ b/chrome/test/media_router/test_media_sinks_observer.cc
@@ -7,12 +7,14 @@
 
 #include "chrome/browser/media/router/media_router.h"
 #include "chrome/test/media_router/test_media_sinks_observer.h"
+#include "url/gurl.h"
 
 namespace media_router {
 
 TestMediaSinksObserver::TestMediaSinksObserver(MediaRouter* router,
-                                               const MediaSource& source)
-    : MediaSinksObserver(router, source) {
+                                               const MediaSource& source,
+                                               const GURL& origin)
+    : MediaSinksObserver(router, source, origin) {
 }
 
 TestMediaSinksObserver::~TestMediaSinksObserver() {