Add license check suppression for EGL extension header

tools/checklicenses/checklicenses.py

 #!/usr/bin/python
 # Copyright (c) 2011 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.
 
 """Makes sure that all files contain proper licensing information."""
 
 
 import optparse
 import os.path
@@ skipping 109 matching lines @@
     # http://crbug.com/98097
     'gpu/GLES2': [
         'UNKNOWN',
     ],
     'gpu/KHR': [
         'UNKNOWN',
     ],
     'gpu/gles2_conform_support/egl/native/EGL': [
         'UNKNOWN',
     ],
+    'gpu/EGL': [
+        'UNKNOWN',
+    ],
 
     'native_client': [  # http://crbug.com/98099
         'UNKNOWN',
     ],
     'native_client/toolchain': [
         'BSD GPL (v2 or later)',
         'BSD (2 clause) GPL (v2 or later)',
         'BSD (3 clause) GPL (v2 or later)',
         'BSL (v1.0) GPL',
         'GPL',
@@ skipping 373 matching lines @@
                            'to "../.." relative to the script file, which '
                            'will normally be the repository root.')
   option_parser.add_option('-v', '--verbose', action='store_true',
                            default=False, help='Print debug logging')
   option_parser.add_option('--ignore-suppressions',
                            action='store_true',
                            default=False,
                            help='Ignore path-specific license whitelist.')
   options, args = option_parser.parse_args()
   main(options, args)