Prepare for using GYP build on buildbots

tools/presubmit.py

 #!/usr/bin/env python
 #
 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 285 matching lines @@
     return False
 
   def GetPathsToSearch(self):
     return ['.']
 
   def IgnoreDir(self, name):
     return (super(SourceProcessor, self).IgnoreDir(name)
               or (name == 'third_party')
               or (name == 'gyp')
               or (name == 'out')
-              or (name == 'obj'))
+              or (name == 'obj')
+              or (name == 'DerivedSources'))
 
   IGNORE_COPYRIGHTS = ['cpplint.py',
                        'earley-boyer.js',
                        'raytrace.js',
                        'crypto.js',
                        'libraries.cc',
                        'libraries-empty.cc',
                        'jsmin.py',
                        'regexp-pcre.js']
   IGNORE_TABS = IGNORE_COPYRIGHTS + ['unicode-test.js', 'html-comments.js']
@@ skipping 61 matching lines @@
   print "Running copyright header and trailing whitespaces check..."
   success = SourceProcessor().Run(workspace) and success
   if success:
     return 0
   else:
     return 1
 
 
 if __name__ == '__main__':
   sys.exit(Main())