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

ash/resources/PRESUBMIT.py

 # 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.
 
-"""Presubmit script for Chromium theme resources.
+"""Presubmit script for ash Chromium Ash resources.

[flackr, 2012/09/13 17:52:25]

ash Chromium Ash?

 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into gcl/git cl, and see
 http://www.chromium.org/developers/web-development-style-guide for the rules
 we're checking against here.
 """
 
 
 def CheckChangeOnUpload(input_api, output_api):
   return _CommonChecks(input_api, output_api)
 
 
 def CheckChangeOnCommit(input_api, output_api):
   return _CommonChecks(input_api, output_api)
 
 
 def _CommonChecks(input_api, output_api):
   """Checks common to both upload and commit."""
   results = []
   resources = input_api.os_path.join(input_api.PresubmitLocalPath(),
-      '../../../ui/resources')
+      '../../ui/resources')
 
   # List of paths with their associated scale factor. This is used to verify
   # that the images modified in one are the correct scale of the other.
   path_scales = [
     [(100, 'default_100_percent/'), (200, 'default_200_percent/')],
   ]
 
   import sys
   old_path = sys.path
 
   try:
     sys.path = [resources] + old_path
     from resource_check import resource_scale_factors
 
     for paths in path_scales:
       results.extend(resource_scale_factors.ResourceScaleFactors(
           input_api, output_api, paths).RunChecks())
   finally:
     sys.path = old_path
 
   return results