Finish converting chrome_strings target to use qualified paths.

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 265 matching lines @@
         },
         {
           # GN version: //chrome/app:google_chrome_strings
           'action_name': 'generate_google_chrome_strings',
           'variables': {
             'grit_grd_file': 'app/google_chrome_strings.grd',
           },
           'includes': [ '../build/grit_action.gypi' ],
         },
       ],
-      'includes': [ '../build/grit_target.gypi' ],
     },
     {
       # GN version: //chrome/app:make_generated_resources_map
       'target_name': 'chrome_strings_map',
       'type': 'none',
       'dependencies': [ 'chrome_strings', ],
       'actions': [
         {
           'action_name': 'generate_resources_map',
           'inputs': [
@@ skipping 271 matching lines @@
                      '<(generator_path)',
                      'credits',
                      '<(about_credits_file)',
           ],
           'message': 'Generating about:credits',
         },
       ],
     },
   ], # targets
 }