Add components resources repack to GN build.

components/components_tests.gyp

 # Copyright 2014 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': {
     # This turns on e.g. the filename-based detection of which
     # platforms to include source files on (e.g. files ending in
     # _mac.h or _mac.cc are only compiled on MacOSX).
     'chromium_code': 1,
   },
   'conditions': [
     ['android_webview_build == 0', {
       'targets': [
         {
+          # GN version: //components:components_tests_pak
           'target_name': 'components_tests_pak',
           'type': 'none',
           'dependencies': [
             '../ui/resources/ui_resources.gyp:ui_resources',
             '../ui/strings/ui_strings.gyp:ui_strings',
             'components_resources.gyp:components_resources',
             'components_strings.gyp:components_strings',
           ],
           'actions': [
             {
@@ skipping 1037 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'components_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }