make utf-8 default encoding for remoting_localize.py

remoting/tools/build/remoting_localize.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.
 
 """
 localize.py -- Generates an output file from the given template replacing
 variables and localizing strings.
 
 The script uses Jinja2 template processing library (src/third_party/jinja2).
@@ skipping 572 matching lines @@
   messages_file = io.open(file_name, encoding='utf-8-sig')
   messages = json.load(messages_file)
   messages_file.close()
 
   values = {}
   for key in messages.keys():
     values[key] = unicode(messages[key]['message']);
   return values
 
 
-def WriteIfChanged(file_name, contents, encoding='utf-16'):
+def WriteIfChanged(file_name, contents, encoding):
   """
   Writes the specified contents to the specified file_name
   iff the contents are different than the current contents.
   """
   try:
     target = io.open(file_name, 'r')
     old_contents = target.read()
   except EnvironmentError:
     pass
   except UnicodeDecodeError:
@@ skipping 132 matching lines @@
   return
 
 
 def DoMain(argv):
   usage = "Usage: localize [options] locales"
   parser = OptionParser(usage=usage)
   parser.add_option(
       '-d', '--define', dest='define', action='append', type='string',
       help='define a variable (NAME=VALUE).')
   parser.add_option(
-      '--encoding', dest='encoding', type='string', default='utf-16',
-      help="set the encoding of <output>. 'utf-16' is the default.")
+      '--encoding', dest='encoding', type='string', default='utf-8',
+      help="set the encoding of <output>. 'utf-8' is the default.")
   parser.add_option(
       '--jinja2', dest='jinja2', type='string',
       help="specifies path to the jinja2 library.")
   parser.add_option(
       '--locale_dir', dest='locale_dir', type='string',
       help="set path to localized message files.")
   parser.add_option(
       '--locale_output', dest='locale_output',  type='string',
       help='specify the per-locale output file name.')
   parser.add_option(
@@ skipping 16 matching lines @@
     parser.error(
         'Either --output or --locale_output must be specified but not both')
   if not options.template and not options.print_only:
     parser.error('The template name is required unless --print_only is used')
 
   return Localize(options.template, locales, options)
 
 if __name__ == '__main__':
   sys.exit(DoMain(sys.argv[1:]))