Revert of Media Router GYP/GN cleanup

chrome/browser/media/router/media_router.gypi

Index: chrome/browser/media/router/media_router.gypi
diff --git a/chrome/browser/media/router/media_router.gypi b/chrome/browser/media/router/media_router.gypi
deleted file mode 100644
index 32bce7122a7222bb8a4e102bed4e49c568093051..0000000000000000000000000000000000000000
--- a/chrome/browser/media/router/media_router.gypi
+++ /dev/null
@@ -1,44 +0,0 @@
-# Copyright (c) 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.
-
-{
-  'variables': {
-    # File lists shared with GN build.
-    'media_router_sources': [
-      'create_session_request.cc',
-      'create_session_request.h',
-      'issue.cc',
-      'issue.h',
-      'issue_manager.cc',
-      'issue_manager.h',
-      'issues_observer.h',
-      'media_route.cc',
-      'media_route.h',
-      'media_route_id.h',
-      'media_router.h',
-      'media_router_type_converters.cc',
-      'media_router_type_converters.h',
-      'media_routes_observer.cc',
-      'media_routes_observer.h',
-      'media_sink.cc',
-      'media_sink.h',
-      'media_sinks_observer.cc',
-      'media_sinks_observer.h',
-      'media_source.cc',
-      'media_source.h',
-      'media_source_helper.cc',
-      'media_source_helper.h',
-      'presentation_media_sinks_observer.cc',
-      'presentation_media_sinks_observer.h',
-      'route_id_manager.cc',
-      'route_id_manager.h',
-    ],
-    'media_router_test_support_sources': [
-      'mock_media_router.cc',
-      'mock_media_router.h',
-      'mock_screen_availability_listener.cc',
-      'mock_screen_availability_listener.h',
-    ],
-  },
-}