[Media Router] Convert to use typemaps for media_router.mojom.

chrome/browser/media/router/BUILD.gn

 # 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.
 #
 
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 static_library("router") {
   deps = [
@@ skipping 73 matching lines @@
       "media_router_ui_service.cc",
       "media_router_ui_service.h",
       "media_router_ui_service_factory.cc",
       "media_router_ui_service_factory.h",
       "mojo/media_route_provider_util_win.cc",
       "mojo/media_route_provider_util_win.h",
       "mojo/media_router_mojo_impl.cc",
       "mojo/media_router_mojo_impl.h",
       "mojo/media_router_mojo_metrics.cc",
       "mojo/media_router_mojo_metrics.h",
-      "mojo/media_router_type_converters.cc",
-      "mojo/media_router_type_converters.h",
     ]
   }
 }
 
 mojom("mojo_bindings") {
   sources = [
     "mojo/media_router.mojom",
   ]
 
   public_deps = [
@@ skipping 22 matching lines @@
     deps += [
       ":mojo_bindings",
       "//extensions/common",
     ]
     sources += [
       "mojo/media_router_mojo_test.cc",
       "mojo/media_router_mojo_test.h",
     ]
   }
 }