Remove enable_media_router.

chrome/browser/extensions/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
 import("//extensions/features/features.gni")
 import("//media/media_options.gni")
 import("//rlz/features/features.gni")
@@ skipping 795 matching lines @@
     "//apps",
     "//chrome:extra_resources",
     "//chrome:resources",
     "//chrome:strings",
     "//chrome/app:command_ids",
     "//chrome/app/resources:platform_locale_settings",
     "//chrome/app/theme:chrome_unscaled_resources",
     "//chrome/app/theme:theme_resources",
     "//chrome/app/vector_icons",
     "//chrome/browser/devtools",
+    "//chrome/browser/media/router",
     "//chrome/browser/media/router/discovery",
     "//chrome/common",
     "//chrome/common/extensions/api:api_registration",
     "//chrome/common/extensions/api:extensions_features",
     "//chrome/common/safe_browsing:proto",
     "//components/app_modal",
     "//components/autofill/content/browser",
     "//components/bookmarks/browser",
     "//components/bookmarks/managed",
     "//components/browser_sync",
@@ skipping 85 matching lines @@
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/native_theme",
     "//ui/resources",
     "//ui/shell_dialogs",
     "//ui/strings",
     "//ui/vector_icons",
     "//url",
   ]
 
-  if (enable_media_router) {
-    deps += [ "//chrome/browser/media/router" ]
-  }
-
   if (!is_chromeos) {
     sources += [ "chrome_kiosk_delegate.cc" ]
   }
 
   if (is_chromeos) {
     sources += [
       "api/certificate_provider/certificate_provider_api.cc",
       "api/certificate_provider/certificate_provider_api.h",
       "api/enterprise_device_attributes/enterprise_device_attributes_api.cc",
       "api/enterprise_device_attributes/enterprise_device_attributes_api.h",
@@ skipping 244 matching lines @@
       "api/braille_display_private/brlapi_connection.cc",
       "api/braille_display_private/brlapi_connection.h",
       "api/braille_display_private/brlapi_keycode_map.cc",
       "api/braille_display_private/brlapi_keycode_map.h",
     ]
     deps += [ "//build/linux/libbrlapi" ]
   } else {
     sources += [ "api/braille_display_private/braille_controller_stub.cc" ]
   }
 }