[Media Router] Add origins to sink query results.

extensions/renderer/resources/media_router_bindings.js

Index: extensions/renderer/resources/media_router_bindings.js
diff --git a/extensions/renderer/resources/media_router_bindings.js b/extensions/renderer/resources/media_router_bindings.js
index b6252c50e999fe49cbc08973532b30b1db95939b..cfb36f1738ce6ad3fba17389edf7e70daed5db08 100644
--- a/extensions/renderer/resources/media_router_bindings.js
+++ b/extensions/renderer/resources/media_router_bindings.js
@@ -265,9 +265,13 @@ define('media_router_bindings', [
    * updated.
    * @param {!string} sourceUrn
    * @param {!Array<!MediaSink>} sinks
+   * @param {Array<string>=} opt_origins
    */
-  MediaRouter.prototype.onSinksReceived = function(sourceUrn, sinks) {
-    this.service_.onSinksReceived(sourceUrn, sinks.map(sinkToMojo_));
+  MediaRouter.prototype.onSinksReceived = function(sourceUrn, sinks,
+      opt_origins) {
+    // TODO(imcheng): Make origins required in M52+.
+    this.service_.onSinksReceived(sourceUrn, sinks.map(sinkToMojo_),
+        opt_origins || []);
   };
 
   /**