presubmit: unblacklist third_party/WebKit

presubmit_support.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Enables directory-specific presubmit checks to run at upload and/or commit.
 """
 
 __version__ = '1.8.0'
 
@@ skipping 227 matching lines @@
       r".+\.js$", r".+\.py$", r".+\.sh$", r".+\.rb$", r".+\.pl$", r".+\.pm$",
       # Other
       r".+\.java$", r".+\.mk$", r".+\.am$", r".+\.css$"
   )
 
   # Path regexp that should be excluded from being considered containing source
   # files. Don't modify this list from a presubmit script!
   DEFAULT_BLACK_LIST = (
       r"testing_support[\\\/]google_appengine[\\\/].*",
       r".*\bexperimental[\\\/].*",
-      r".*\bthird_party[\\\/].*",
+      # Exclude third_party/.* but NOT third_party/WebKit (crbug.com/539768).
+      r".*\bthird_party[\\\/](?!WebKit[\\\/]).*",
       # Output directories (just in case)
       r".*\bDebug[\\\/].*",
       r".*\bRelease[\\\/].*",
       r".*\bxcodebuild[\\\/].*",
       r".*\bout[\\\/].*",
       # All caps files like README and LICENCE.
       r".*\b[A-Z0-9_]{2,}$",
       # SCM (can happen in dual SCM configuration). (Slightly over aggressive)
       r"(|.*[\\\/])\.git[\\\/].*",
       r"(|.*[\\\/])\.svn[\\\/].*",
@@ skipping 1492 matching lines @@
     return 2
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   try:
     sys.exit(main())
   except KeyboardInterrupt:
     sys.stderr.write('interrupted\n')
     sys.exit(1)