Add chrome crash service to GN build on Windows.

chrome/chrome.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': {
     'chromium_code': 1,
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 402 matching lines @@
             'app/chrome_exe.ver',
             'app/chrome_dll.ver',
             'app/nacl64_exe.ver',
             'app/other.ver',
           ],
           'includes': [
             'version_resource_rules.gypi',
           ],
         },
         {
+          # GN version: //chrome/tools/crash_service
           'target_name': 'crash_service',
           'type': 'executable',
           'dependencies': [
             'installer_util',
             '../base/base.gyp:base',
             '../chrome/common_constants.gyp:common_constants',
             '../components/components.gyp:breakpad_crash_service',
           ],
           'include_dirs': [
             '..',
@@ skipping 48 matching lines @@
           'direct_dependent_settings': {
             'msvs_settings': {
               'VCLinkerTool': {
                 'AdditionalLibraryDirectories': ['<(lib_dir)', ],
                 'AdditionalDependencies': ['chrome.user32.delay.lib', ],
               },
             },
           },
         },
         {
+          # GN version: //chrome/tools/crash_service:crash_service_win64
           'target_name': 'crash_service_win64',
           'type': 'executable',
           'product_name': 'crash_service64',
           'dependencies': [
             'installer_util_nacl_win64',
             '../base/base.gyp:base_static_win64',
             '../chrome/common_constants.gyp:common_constants_win64',
             '../components/components.gyp:breakpad_crash_service_win64',
           ],
           'include_dirs': [
@@ skipping 298 matching lines @@
                   '<(DEPTH)/third_party/kasko'
                 ],
               },
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }