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

chrome/chrome_tests.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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 2123 matching lines @@
         ['enable_extensions==0', {
           'sources/': [
             ['exclude', '^browser/extensions/api/'],
             ['exclude', '^browser/sync/glue/chrome_extensions_activity_monitor_unittest.cc'],
           ],
         }],
         ['use_ash==1', {
           'sources': [
             'browser/ui/app_list/apps_model_builder_unittest.cc',
           ],
+          'dependencies': [
+            '../ash/ash.gyp:ash_resources',
+          ],
         }],
         ['use_aura==1', {
           'dependencies': [
             '../ui/aura/aura.gyp:test_support_aura',
           ],
           'sources/': [
             ['exclude', '^browser/automation/automation_provider_unittest.cc'],
             ['exclude', '^browser/accessibility/browser_accessibility_win_unittest.cc'],
             ['exclude', '^browser/ui/views/extensions/browser_action_drag_data_unittest.cc'],
             ['exclude', '^browser/ui/views/bookmarks/bookmark_editor_view_unittest.cc'],
@@ skipping 2608 matching lines @@
                 '--result', '<@(_outputs)',
                 '--isolate', 'browser_tests.isolate',
               ],
             },
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }