git_cl format: allow WebKit style to be picked up from .clang-format

git_cl.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.
 
 # Copyright (C) 2008 Evan Martin <martine@danga.com>
 
 """A git-command for integrating reviews on Rietveld."""
 
 from distutils.version import LooseVersion
@@ skipping 2340 matching lines @@
     clang_format_tool = clang_format.FindClangFormatToolInChromiumTree()
   except clang_format.NotFoundError, e:
     DieWithError(e)
 
   if opts.full:
     # diff_output is a list of files to send to clang-format.
     files = diff_output.splitlines()
     if not files:
       print "Nothing to format."
       return 0
-    RunCommand([clang_format_tool, '-i', '-style', 'Chromium'] + files,
+    RunCommand([clang_format_tool, '-i'] + files,
                cwd=top_dir)
   else:
     env = os.environ.copy()
     env['PATH'] = os.path.dirname(clang_format_tool)
     # diff_output is a patch to send to clang-format-diff.py
     try:
       script = clang_format.FindClangFormatScriptInChromiumTree(
           'clang-format-diff.py')
     except clang_format.NotFoundError, e:
       DieWithError(e)
 
-    cmd = [sys.executable, script, '-p0', '-style', 'Chromium', '-i']
+    cmd = [sys.executable, script, '-p0', '-i']
 
     RunCommand(cmd, stdin=diff_output, cwd=top_dir, env=env)
 
   return 0
 
 
 class OptionParser(optparse.OptionParser):
   """Creates the option parse and add --verbose support."""
   def __init__(self, *args, **kwargs):
     optparse.OptionParser.__init__(
@@ skipping 31 matching lines @@
         ('AppEngine is misbehaving and returned HTTP %d, again. Keep faith '
           'and retry or visit go/isgaeup.\n%s') % (e.code, str(e)))
 
 
 if __name__ == '__main__':
   # These affect sys.stdout so do it outside of main() to simplify mocks in
   # unit testing.
   fix_encoding.fix_encoding()
   colorama.init()
   sys.exit(main(sys.argv[1:]))