icu should not include build/common.gypi once chromium issue 206006 is landed.

icu.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.
 
 {
-  'includes': [
-    '../../build/common.gypi',
-  ],
   'target_defaults': {
     'defines': [
       'U_STATIC_IMPLEMENTATION',
     ],
     # TODO(mark): Looks like this is causing the "public" include directories
     # to show up twice in some targets in this file.  Fix.
     'include_dirs': [
       'public/common',
       'public/i18n',
       'source/common',
@@ skipping 375 matching lines @@
             'cflags': [
                 '-Wno-unused-function',
                 # TODO(port): fix ICU to not depend on this flag.
                 '-fno-strict-aliasing',
             ],
         },],
       ],
     },
   ],
 }