Revert of [Media Router] Custom Controls 3 - add plumbing through MRUI and MRWebUIMessageHandler

chrome/browser/media/router/mojo/media_router_mojo_test.cc

Index: chrome/browser/media/router/mojo/media_router_mojo_test.cc
diff --git a/chrome/browser/media/router/mojo/media_router_mojo_test.cc b/chrome/browser/media/router/mojo/media_router_mojo_test.cc
index 567c72ecf6bd6f1695ec1994d34c5c648e880dfb..d88c9649ee66492920e2f9a33701084de4617d1c 100644
--- a/chrome/browser/media/router/mojo/media_router_mojo_test.cc
+++ b/chrome/browser/media/router/mojo/media_router_mojo_test.cc
@@ -45,16 +45,6 @@
   binding_.Close();
 }
 
-MockMediaRouteController::MockMediaRouteController(
-    const MediaRoute::Id& route_id,
-    mojom::MediaControllerPtr mojo_media_controller,
-    MediaRouter* media_router)
-    : MediaRouteController(route_id,
-                           std::move(mojo_media_controller),
-                           media_router) {}
-
-MockMediaRouteController::~MockMediaRouteController() {}
-
 MockMediaRouteControllerObserver::MockMediaRouteControllerObserver(
     scoped_refptr<MediaRouteController> controller)
     : MediaRouteController::Observer(controller) {}