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

o3d/tests/selenium/selenium.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': {
     'chromium_code': 1,
     'selenium_args': [
       '--referencedir=<(screenshotsdir)',
       '--product_dir=<(PRODUCT_DIR)',
@@ skipping 222 matching lines @@
                 '--browser=*iexplore',
                 '--screenshotsdir=<(PRODUCT_DIR)/tests/selenium/screenshots_ie',
               ],
             },
           },
         ],
       },
     ],
   ],
 }
+
+# Local Variables:
+# tab-width:2
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=2 shiftwidth=2: