android: Remove last two references to bug 177552.

build/android/gyp/gcc_preprocess.py

 #!/usr/bin/env python
 #
 # Copyright 2013 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.
 
 import optparse
 import os
 import sys
 
@@ skipping 19 matching lines @@
 
 
 def main():
   parser = optparse.OptionParser()
   parser.add_option('--include-path', help='Include path for gcc.')
   parser.add_option('--template', help='Path to template.')
   parser.add_option('--output', help='Path for generated file.')
   parser.add_option('--stamp', help='Path to touch on success.')
   parser.add_option('--defines', help='Pre-defines macros', action='append')
 
-  # TODO(newt): remove this once http://crbug.com/177552 is fixed in ninja.
-  parser.add_option('--ignore', help='Ignored.')
-
   options, _ = parser.parse_args()
 
   DoGcc(options)
 
   if options.stamp:
     build_utils.Touch(options.stamp)
 
 
 if __name__ == '__main__':
   sys.exit(main())