Make the process-wide ServiceRegistry available to JS.

extensions/renderer/resources/media_router_bindings.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var mediaRouter;
 
 define('media_router_bindings', [
     'mojo/public/js/bindings',
     'mojo/public/js/core',
-    'content/public/renderer/service_provider',
+    'content/public/renderer/frame_service_registry',
     'chrome/browser/media/router/media_router.mojom',
     'extensions/common/mojo/keep_alive.mojom',
     'mojo/public/js/connection',
     'mojo/public/js/router',
 ], function(bindings,
             core,
             serviceProvider,
             mediaRouterMojom,
             keepAliveMojom,
             connector,
@@ skipping 720 matching lines @@
   };
 
   mediaRouter = new MediaRouter(connector.bindHandleToProxy(
       serviceProvider.connectToService(
           mediaRouterMojom.MediaRouter.name),
       mediaRouterMojom.MediaRouter));
 
   return mediaRouter;
 });