translator: Add Python 3 support (see issue #2856)

This also fixes incorrect translation of types in capi header comments.

tools/make_config_header.py

@@ -2,6 +2,7 @@
 # reserved. Use of this source code is governed by a BSD-style license that
 # can be found in the LICENSE file.
 
+from __future__ import absolute_import
 from date_util import *
 from file_util import *
 from optparse import OptionParser
@@ -54,6 +55,7 @@ def check_x11_build(gn_config):
 
   return True
 
+
 def write_config_header(header, cef_gn_config):
   """ Creates the header file for the cef build configuration
        if the information has changed or if the file doesn't already exist. """
@@ -113,6 +115,7 @@ def write_config_header(header, cef_gn_config):
     return True
   return False
 
+
 written = write_config_header(options.header, options.cef_gn_config)
 if not options.quiet:
   if written: