Metro/HiDPI: Use metro resource pak in metro mode

tools/gritsettings/resource_ids

 # 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.
 #
 # This file is used to assign starting resource ids for resources and strings
 # used by Chromium.  This is done to ensure that resource ids are unique
 # across all the grd files.  If you are adding a new grd file, please add
 # a new entry to this file.
 #
 # The first entry in the file, SRCDIR, is special: It is a relative path from
@@ skipping 128 matching lines @@
   "<(SHARED_INTERMEDIATE_DIR)/devtools/devtools_resources.grd": {
     "includes": [20500],
   },
   # All standard and large theme resources should have the same IDs.
   "chrome/app/theme/theme_resources_standard.grd": {
     "includes": [21000],
   },
   "chrome/app/theme/theme_resources_2x.grd": {
     "includes": [21000],
   },
+  "chrome/app/theme/theme_resources_metro_1x.grd": {
+    "includes": [21000],
+  },
   # This file is generated during the build.
   "chrome/browser/debugger/frontend/devtools_discovery_page_resources.grd": {
     "includes": [21500],
   },
   "chrome/browser/resources/options_resources.grd": {
     "includes": [22000],
   },
   "chrome/browser/resources/options2_resources.grd": {
     "includes": [22200],
   },
@@ skipping 16 matching lines @@
   "content/shell/shell_resources.grd": {
     "includes": [25000],
   },
   "ash/ash_strings.grd": {
     "messages": [25500],
   },
   "chrome/common/extensions_api_resources.grd": {
     "includes": [26000],
   },
 }