Add comments setting emacs and vim tab width and expansion variables....

build/util/build_util.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.
 
 {
   'targets': [
     {
       'target_name': 'lastchange',
       'type': 'none',
       'variables': {
@@ skipping 17 matching lines @@
             '-o', '<(lastchange_out_path)',
             '-d', '<(default_lastchange_path)',
           ],
           'message': 'Extracting last change to <(lastchange_out_path)',
           'process_outputs_as_sources': '1',
         },
       ],
     },
   ]
 }
+
+# Local Variables:
+# tab-width:2
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=2 shiftwidth=2: