Remove enable_media_router.

chrome/browser/media/router/media_router_ui_service_factory.cc

 // Copyright 2016 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.
 
 #include "chrome/browser/media/router/media_router_ui_service_factory.h"
 
 #include "chrome/browser/media/router/media_router_factory.h"
 #include "chrome/browser/media/router/media_router_ui_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/toolbar/toolbar_actions_model_factory.h"
@@ skipping 32 matching lines @@
     BrowserContext* context) const {
   return context;
 }
 
 KeyedService* MediaRouterUIServiceFactory::BuildServiceInstanceFor(
     BrowserContext* context) const {
   return new MediaRouterUIService(Profile::FromBrowserContext(context));
 }
 
 bool MediaRouterUIServiceFactory::ServiceIsCreatedWithBrowserContext() const {
-#if defined(ENABLE_MEDIA_ROUTER) && !defined(OS_ANDROID)
+#if !defined(OS_ANDROID)
   return true;
 #else
   return false;
 #endif
 }
 
 bool MediaRouterUIServiceFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }
 
 }  // namespace media_router