Allow expected.txt files in testharness LayoutTests w/console warnings

Tools/Scripts/check-testharness-expected-pass

 #!/usr/bin/env python
 #
 # Copyright 2014 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.
 
 """Check if a LayoutTest expected file is a passing testharness result.
 
 The intent of this script is to identify expected files that are passing
 testharness.js results. Those files are not needed because the test
 infrastructure will read the output of testharness.js tests if there is no
 expected files."""
 
 
 import fileinput
 import sys
 
 from webkitpy.layout_tests.models import testharness_results
 
 paths = []
 
 for path in sys.argv[1:]:
     content = open(path, 'r').read()
-    if testharness_results.is_testharness_output(content) and \
-       testharness_results.is_testharness_output_passing(content) and \
-       not testharness_results.is_testharness_output_with_console_errors(content):
+    if (testharness_results.is_testharness_output(content) and
+       testharness_results.is_testharness_output_passing(content) and
+       not testharness_results.is_testharness_output_with_console_errors_or_warnings(content)):
         paths.append(path)
 
 if len(paths) > 0:
     sys.stderr.write('* The following files are passing testharness results without console error messages, they should be removed:\n ')
     sys.stderr.write('\n '.join(paths))
     sys.stderr.write('\n')
     sys.exit("ERROR: found passing testharness results without console error messages.")