Remove enable_media_router.

chrome/common/extensions/extension_constants.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 82 matching lines @@
 
 // The extension id of the hotword shared module.
 extern const char kHotwordSharedModuleId[];
 
 // The extension id of the Youtube application.
 extern const char kYoutubeAppId[];
 
 // The extension id of the in-app payments support application.
 extern const char kInAppPaymentsSupportAppId[];
 
-#if defined(ENABLE_MEDIA_ROUTER)
 // The extension id of the stable media router extension.
 extern const char kMediaRouterStableExtensionId[];
-#endif  // defined(ENABLE_MEDIA_ROUTER)
 
 // The buckets used for app launches.
 enum AppLaunchBucket {
   // Launch from NTP apps section while maximized.
   APP_LAUNCH_NTP_APPS_MAXIMIZED,
 
   // Launch from NTP apps section while collapsed.
   APP_LAUNCH_NTP_APPS_COLLAPSED,
 
   // Launch from NTP apps section while in menu mode.
@@ skipping 134 matching lines @@
 extern const char kAppStateDisabled[];
 extern const char kAppStateRunning[];
 extern const char kAppStateCannotRun[];
 extern const char kAppStateReadyToRun[];
 
 // The path part of the file system url used for media file systems.
 extern const char kMediaFileSystemPathPart[];
 }  // namespace extension_misc
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_