Fix sys.path of create_incremental_install_script.py

build/android/gn/create_incremental_install_script.py

 #!/usr/bin/env python
 
 # Copyright 2015 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.
 
 """Creates a script to run a "_incremental" .apk."""
 
 import argparse
 import os
 import sys
 
 sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir))
-from gyp.util import build_utils
+sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir, 'gyp'))
+from util import build_utils
 from pylib import constants
 
 
 SCRIPT_TEMPLATE = """\
 #!/usr/bin/env python
 #
 # This file was generated by:
 #     //build/android/gyp/create_incremental_install_script.py
 
 import os
@@ skipping 67 matching lines @@
   os.chmod(options.script_output_path, 0750)
 
   if options.depfile:
     build_utils.WriteDepfile(
         options.depfile,
         build_utils.GetPythonDependencies())
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))