Force inclusion of build/common.gypi for all chromium gyp files.

third_party/libxml/libxml.gyp

 # 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.
 
 {
   'variables': {
     'conditions': [
       ['OS=="linux" or OS=="freebsd"', {'os_include': 'linux'}],
       ['OS=="mac"', {'os_include': 'mac'}],
       ['OS=="win"', {'os_include': 'win32'}],
     ],
     'use_system_libxml%': 0,
   },
-  'includes': [
-    '../../build/common.gypi',
-  ],
   'targets': [
     {
       'target_name': 'libxml',
       'conditions': [
         ['(OS=="linux" or OS=="freebsd") and use_system_libxml', {
           'type': 'settings',
           'direct_dependent_settings': {
             'cflags': [
               '<!@(pkg-config --cflags libxml-2.0)',
             ],
@@ skipping 152 matching lines @@
               'product_name': 'libxml2',
             }, {  # else: OS!="win"
               'product_name': 'xml2',
             }],
           ],
         }],
       ],
     },
   ],
 }