Set the chromium_code GYP variable

compat/compat.gyp

 # Copyright 2014 The Crashpad Authors. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
 {
+  'includes': [
+    '../build/crashpad.gypi',
+  ],
   'targets': [
     {
       'target_name': 'compat',
       'type': 'static_library',
       'sources': [
         'mac/AvailabilityMacros.h',
         'mac/mach/mach.h',
         'mac/mach-o/getsect.cc',
         'mac/mach-o/getsect.h',
         'mac/mach-o/loader.h',
@@ skipping 37 matching lines @@
           'direct_dependent_settings': {
             'include_dirs': [
               'non_win',
             ],
           },
         }],
       ],
     },
   ],
 }