Reformat webkitpy.layout_tests w/ format-webkitpy.

Tools/Scripts/webkitpy/layout_tests/reftests/extract_reference_link.py

 # Copyright (C) 2011 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 19 matching lines @@
 
 
 class ExtractReferenceLinkParser(HTMLParser):
 
     def __init__(self):
         HTMLParser.__init__(self)
         self.matches = []
         self.mismatches = []
 
     def handle_starttag(self, tag, attrs):
-        if tag != "link":
+        if tag != 'link':
             return
         attrs = dict(attrs)
-        if not "rel" in attrs:
+        if not 'rel' in attrs:
             return
-        if not "href" in attrs:
+        if not 'href' in attrs:
             return
-        if attrs["rel"] == "match":
-            self.matches.append(attrs["href"])
-        if attrs["rel"] == "mismatch":
-            self.mismatches.append(attrs["href"])
+        if attrs['rel'] == 'match':
+            self.matches.append(attrs['href'])
+        if attrs['rel'] == 'mismatch':
+            self.mismatches.append(attrs['href'])
 
 
 def get_reference_link(html_string):
     """Returns reference links in the given html_string.
 
     Returns:
         a tuple of two URL lists, (matches, mismatches).
     """
     parser = ExtractReferenceLinkParser()
     parser.feed(html_string)
     parser.close()
 
     return parser.matches, parser.mismatches