Update from https://crrev.com/327068

build/escape_unicode.py

-#!/usr/bin/env 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.
-
-"""Convert any unicode characters found in the input file to C literals."""
-
-import codecs
-import optparse
-import os
-import sys
-
-
-def main(argv):
-  parser = optparse.OptionParser()
-  usage = 'Usage: %prog -o <output_dir> <input_file>'
-  parser.set_usage(usage)
-  parser.add_option('-o', dest='output_dir')
-
-  options, arglist = parser.parse_args(argv)
-
-  if not options.output_dir:
-    print "output_dir required"
-    return 1
-
-  if len(arglist) != 2:
-    print "input_file required"
-    return 1
-
-  in_filename = arglist[1]
-
-  if not in_filename.endswith('.utf8'):
-    print "input_file should end in .utf8"
-    return 1
-
-  out_filename = os.path.join(options.output_dir, os.path.basename(
-      os.path.splitext(in_filename)[0]))
-
-  WriteEscapedFile(in_filename, out_filename)
-  return 0
-
-
-def WriteEscapedFile(in_filename, out_filename):
-  input_data = codecs.open(in_filename, 'r', 'utf8').read()
-  with codecs.open(out_filename, 'w', 'ascii') as out_file:
-    for i, char in enumerate(input_data):
-      if ord(char) > 127:
-        out_file.write(repr(char.encode('utf8'))[1:-1])
-        if input_data[i + 1:i + 2] in '0123456789abcdefABCDEF':
-          out_file.write('""')
-      else:
-        out_file.write(char.encode('ascii'))
-
-
-if __name__ == '__main__':
-  sys.exit(main(sys.argv))