Update links to layout test documentation.

media/tools/layout_tests/bug.py

 # 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.
 
 """Bug module that is necessary for the layout analyzer."""
 
 import re
 
 from webkitpy.layout_tests.models.test_expectations import *
 
 
 class Bug(object):
   """A class representing a bug.
 
   TODO(imasaki): add more functionalities here if bug-tracker API is available.
   For example, you can get the name of a bug owner.
   """
   # Type enum for the bug.
   WEBKIT = 0
   CHROMIUM = 1
   OTHERS = 2
 
   def __init__(self, bug_modifier):
     """Initialize the object using raw bug text (such as BUGWK2322).
 
     The bug modifier used in the test expectation file.
 
     Args:
       bug_modifier: a string representing a bug modifier. According to
-        http://www.chromium.org/developers/testing/webkit-layout-tests/\
-        testexpectations
-        Bug identifiers are of the form "webkit.org/b/12345", "crbug.com/12345",
+        //docs/testing/layout_test_expectations.md
+        bug identifiers are of the form "webkit.org/b/12345", "crbug.com/12345",
          "code.google.com/p/v8/issues/detail?id=12345" or "Bug(username)"
     """
     match = re.match('Bug\((\w+)\)$', bug_modifier)
     if match:
       self.type = self.OTHERS
       self.url = 'mailto:%s@chromium.org' % match.group(1).lower()
       self.bug_txt = bug_modifier
       return
 
     self.type = self.GetBugType(bug_modifier)
     self.url = bug_modifier
     self.bug_txt = bug_modifier
 
 
   def GetBugType(self, bug_modifier):
     """Returns type of the bug based on URL."""
     if bug_modifier.startswith(WEBKIT_BUG_PREFIX):
       return self.WEBKIT;
     if bug_modifier.startswith(CHROMIUM_BUG_PREFIX):
       return self.CHROMIUM;
     return self.OTHERS
 
   def __str__(self):
     """Get a string representation of a bug object.
 
     Returns:
       a string for HTML link representation of a bug.
     """
     return '<a href="%s">%s</a>' % (self.url, self.bug_txt)