gclient_utils.FileWrite() assumes text data but trychange doesn't.

trychange.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Client-side script to send a try job to the try server. It communicates to
 the try server by either writting to a svn repository or by directly connecting
 to the server by HTTP.
 """
 
@@ skipping 381 matching lines @@
     try:
       # Description
       temp_file.write(description)
       temp_file.flush()
 
       # Diff file
       current_time = str(datetime.datetime.now()).replace(':', '.')
       file_name = (Escape(options.user) + '.' + Escape(options.name) +
                    '.%s.diff' % current_time)
       full_path = os.path.join(temp_dir, file_name)
-      gclient_utils.FileWrite(full_path, options.diff, 'wb')
+      with open(full_path, 'wb') as f:
+        f.write(options.diff)
 
       # Committing it will trigger a try job.
       if sys.platform == "cygwin":
         # Small chromium-specific issue here:
         # git-try uses /usr/bin/python on cygwin but svn.bat will be used
         # instead of /usr/bin/svn by default. That causes bad things(tm) since
         # Windows' svn.exe has no clue about cygwin paths. Hence force to use
         # the cygwin version in this particular context.
         exe = "/usr/bin/svn"
       else:
@@ skipping 424 matching lines @@
     return 1
   except (gclient_utils.Error, subprocess2.CalledProcessError), e:
     print >> sys.stderr, e
     return 1
   return 0
 
 
 if __name__ == "__main__":
   fix_encoding.fix_encoding()
   sys.exit(TryChange(None, None, False))