web_dev_style: check webui browser tests as well.

chrome/browser/test_presubmit.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.
 
 """Unit tests for Web Development Style Guide checker."""
 
 import os
 import re
 import sys
 import unittest
 
 test_dir = os.path.dirname(os.path.abspath(__file__))
 sys.path.extend([
-    os.path.normpath(os.path.join(test_dir, '..', '..', '..', 'tools')),
+    os.path.normpath(os.path.join(test_dir, '..', '..', 'tools')),
     os.path.join(test_dir),
 ])
 
 import find_depot_tools # pylint: disable=W0611
 from testing_support.super_mox import SuperMoxTestBase
 from web_dev_style import css_checker, js_checker # pylint: disable=F0401
 
 
 class JsStyleGuideTest(SuperMoxTestBase):
   def setUp(self):
@@ skipping 598 matching lines @@
     opacity: .0;
     opacity: 0.0;
     opacity: 0.;
     border-width: 0mm;
     height: 0cm;
     width: 0in;
 """)
 
 if __name__ == '__main__':
   unittest.main()