Policy: generate boilerplate policy type and constant code.

chrome/common_constants.gypi

 # Copyright (c) 2009 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.
 
 {
   'target_defaults': {
     'variables': {
       'common_constants_target': 0,
     },
     'target_conditions': [
       ['common_constants_target==1', {
         'sources': [
           'common/chrome_constants.cc',
           'common/chrome_constants.h',
           'common/chrome_paths.cc',
           'common/chrome_paths.h',
           'common/chrome_paths_internal.h',
           'common/chrome_paths_linux.cc',
           'common/chrome_paths_mac.mm',
           'common/chrome_paths_win.cc',
           'common/chrome_switches.cc',
           'common/chrome_switches.h',
           'common/env_vars.cc',
           'common/env_vars.h',
           'common/json_value_serializer.cc',
           'common/json_value_serializer.h',
           'common/net/gaia/gaia_constants.cc',
           'common/net/gaia/gaia_constants.h',
-          'common/policy_constants.cc',
-          'common/policy_constants.h',
           'common/pref_names.cc',
           'common/pref_names.h',
         ],
         'actions': [
           {
             'action_name': 'Make chrome_version.cc',
             'variables': {
               'make_version_cc_path': 'tools/build/make_version_cc.py',
             },
             'inputs': [
@@ skipping 50 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],
 }