Make android jinja wrapper work on utf-8 templates

build/android/gyp/jinja_template.py

 #!/usr/bin/env python
 #
 # Copyright 2014 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.
 
 """Renders one or more template files using the Jinja template engine."""
 
+import codecs
 import optparse
 import os
 import sys
 
 from util import build_utils
 
 # Import jinja2 from third_party/jinja2
 sys.path.append(os.path.join(os.path.dirname(__file__), '../../../third_party'))
 import jinja2  # pylint: disable=F0401
 
 
 def ProcessFile(input_filename, output_filename, variables):
-  with open(input_filename, 'r') as input_file:
+  with codecs.open(input_filename, 'r', 'utf-8') as input_file:
     input_ = input_file.read()
   env = jinja2.Environment(undefined=jinja2.StrictUndefined)
   template = env.from_string(input_)
   template.filename = os.path.abspath(input_filename)
   output = template.render(variables)
-  with open(output_filename, 'w') as output_file:
+  with codecs.open(output_filename, 'w', 'utf-8') as output_file:
     output_file.write(output)
 
 
 def ProcessFiles(input_filenames, inputs_base_dir, outputs_zip, variables):
   with build_utils.TempDir() as temp_dir:
     for input_filename in input_filenames:
       relpath = os.path.relpath(os.path.abspath(input_filename),
                                 os.path.abspath(inputs_base_dir))
       if relpath.startswith(os.pardir):
         raise Exception('input file %s is not contained in inputs base dir %s'
@@ skipping 49 matching lines @@
     ProcessFiles(inputs, options.inputs_base_dir, options.outputs_zip,
                  variables)
 
   if options.depfile:
     deps = inputs + build_utils.GetPythonDependencies()
     build_utils.WriteDepfile(options.depfile, deps)
 
 
 if __name__ == '__main__':
   main()