Convert chrome_unscaled_resources to use a qualified path.

chrome/chrome_resources.gyp

 # 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': {
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome',
     'about_credits_file': '<(SHARED_INTERMEDIATE_DIR)/about_credits.html',
     'additional_modules_list_file': '<(SHARED_INTERMEDIATE_DIR)/chrome/browser/internal/additional_modules_list.txt',
     'omnibox_mojom_file': '<(SHARED_INTERMEDIATE_DIR)/chrome/browser/ui/webui/omnibox/omnibox.mojom.js',
   },
@@ skipping 521 matching lines @@
     },
     {
       # GN version: //chrome/app/theme:chrome_unscaled_resources
       'target_name': 'chrome_unscaled_resources',
       'type': 'none',
       'actions': [
         {
           'action_name': 'generate_chrome_unscaled_resources',
           'variables': {
             'grit_grd_file': 'app/theme/chrome_unscaled_resources.grd',
+            'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome/app/theme/',
           },
           'includes': [ '../build/grit_action.gypi' ],
         },
       ],
-      'includes': [ '../build/grit_target.gypi' ],
     },
     {
       # GN version: //chrome/browser:about_credits
       'target_name': 'about_credits',
       'type': 'none',
       'actions': [
         {
           'variables': {
             'generator_path': '../tools/licenses.py',
           },
@@ skipping 10 matching lines @@
                      '<(generator_path)',
                      'credits',
                      '<(about_credits_file)',
           ],
           'message': 'Generating about:credits',
         },
       ],
     },
   ], # targets
 }