Remove enable_media_router.

chrome/common/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/buildflag_header.gni")
 import("//build/util/process_version.gni")
 import("//chrome/common/features.gni")
 import("//chrome/process_version_rc_template.gni")  # For branding_file_path.
 import("//extensions/features/features.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
@@ skipping 148 matching lines @@
   public_deps = [
     ":features",
     ":mojo_bindings",
     "//base:base",
     "//base:base_static",
     "//base:i18n",
     "//chrome:resources",
     "//chrome:strings",
     "//chrome/app/theme:theme_resources",
     "//chrome/common:constants",
+    "//chrome/common/media_router/mojo:dial_utility_interfaces",
     "//chrome/common/net",
     "//chrome/common/safe_browsing:proto",
     "//chrome/installer/util:with_no_strings",
     "//components/autofill/content/common:ipc_traits",
     "//components/autofill/core/common",
     "//components/cast_certificate",
     "//components/cdm/common",
     "//components/cloud_devices/common",
     "//components/component_updater",
     "//components/content_settings/core/common",
@@ skipping 355 matching lines @@
     ]
   }
 
   if (enable_cdm_host_verification) {
     sources += [
       "media/cdm_host_file_path.cc",
       "media/cdm_host_file_path.h",
     ]
     public_deps += [ "//chrome/common:version_header" ]
   }
-
-  if (enable_media_router) {
-    public_deps +=
-        [ "//chrome/common/media_router/mojo:dial_utility_interfaces" ]
-  }
 }
 
 process_version("version_header") {
   # TODO(brettw) this should have more reduced visibility, but chrome/browser
   # currently depends on this.
   #visibility = [ ":*" ]
 
   sources = [
     "//build/util/LASTCHANGE",
     "//chrome/VERSION",
@@ skipping 171 matching lines @@
 mojom("instant_mojom") {
   sources = [
     "instant.mojom",
   ]
 
   public_deps = [
     "//mojo/common:common_custom_types",
     "//url/mojo:url_mojom_gurl",
   ]
 }