add ash_resources.grd and necessary changes to use images in ash/resources

chrome/chrome_repack_chrome_200_percent.gypi

 # 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.
 {
   'action_name': 'repack_chrome_resources_200_percent',
   'variables': {
     'pak_inputs': [
       '<(grit_out_dir)/renderer_resources_200_percent.pak',
       '<(grit_out_dir)/theme_resources_200_percent.pak',
       '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/ui_resources_200_percent.pak',
       '<(SHARED_INTERMEDIATE_DIR)/webkit/webkit_resources_200_percent.pak',
     ],
+    'conditions': [
+      ['use_aura==1', {
+        'pak_inputs': [
+          '<(SHARED_INTERMEDIATE_DIR)/ash/ash_resources/ash_resources_200_percent.pak',
+        ],
+      }],
+    ],
   },
   'inputs': [
     '<(repack_path)',
     '<@(pak_inputs)',
   ],
   'outputs': [
     '<(SHARED_INTERMEDIATE_DIR)/repack/chrome_200_percent.pak',
   ],
   'action': ['python', '<(repack_path)', '<@(_outputs)', '<@(pak_inputs)'],
 }