[Media Router] Custom Controls 2 - add MediaRouter::GetRouteController()

chrome/browser/media/router/media_router_base.h

Index: chrome/browser/media/router/media_router_base.h
diff --git a/chrome/browser/media/router/media_router_base.h b/chrome/browser/media/router/media_router_base.h
index e2710031b7627726cd609027c47c3cd1865a6082..79f232dac42e7edae013f0446be388e086f7f79d 100644
--- a/chrome/browser/media/router/media_router_base.h
+++ b/chrome/browser/media/router/media_router_base.h
@@ -34,6 +34,9 @@ class MediaRouterBase : public MediaRouter {
 
   std::vector<MediaRoute> GetCurrentRoutes() const override;
 
+  scoped_refptr<MediaRouteController> GetRouteController(
+      const MediaRoute::Id& route_id) override;
+
  protected:
   FRIEND_TEST_ALL_PREFIXES(MediaRouterMojoImplTest,
                            PresentationConnectionStateChangedCallback);
@@ -85,6 +88,10 @@ class MediaRouterBase : public MediaRouter {
   // KeyedService
   void Shutdown() override;
 
+  // MediaRouter
+  void DetachRouteController(const MediaRoute::Id& route_id,
+                             MediaRouteController* controller) override;
+
   std::unique_ptr<InternalMediaRoutesObserver> internal_routes_observer_;
   bool initialized_;