Allow expected.txt files in testharness LayoutTests with console errors

Tools/Scripts/webkitpy/layout_tests/models/testharness_results_unittest.py

 # 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.
 
 import unittest
 
 from webkitpy.layout_tests.models import testharness_results
 
 
 class TestHarnessResultCheckerTest(unittest.TestCase):
@@ skipping 26 matching lines @@
             {'content': 'This is a testharness.js-based test.\n FAIL: bah \n Harness: the test ran to completion.', 'result': False},
             {'content': 'This is a testharness.js-based test.\n TIMEOUT: bah \n Harness: the test ran to completion.', 'result': False},
             {'content': 'This is a testharness.js-based test.\n NOTRUN: bah \n Harness: the test ran to completion.', 'result': False},
             {'content': 'CONSOLE LOG: error.\nThis is a testharness.js-based test.\nPASS: things are fine.\nHarness: the test ran to completion.\n\n', 'result': True},
             {'content': 'CONSOLE ERROR: error.\nThis is a testharness.js-based test.\nPASS: things are fine.\nHarness: the test ran to completion.\n\n', 'result': True},
             {'content': 'RANDOM TEXT.\nThis is a testharness.js-based test.\nPASS: things are fine.\n.Harness: the test ran to completion.\n\n', 'result': False},
         ]
 
         for data in test_data:
             self.assertEqual(data['result'], testharness_results.is_testharness_output_passing(data['content']))
+
+    def test_is_testharness_output_with_console_errors(self):
+        test_data = [
+            {'content': 'This is a testharness.js-based test.\nCONSOLE ERROR: This is an error.\nTest ran to completion.', 'result': True},
+            {'content': 'CONSOLE ERROR: This is an error.\nTest ran to completion.', 'result': True},
+            {'content': 'This is a testharness.js-based test.\nCONSOLE ERROR: This is an error.', 'result': True},
+            {'content': 'CONSOLE ERROR: This is an error.', 'result': True},
+            {'content': 'This is a testharness.js-based test.\nCONSOLE MESSAGE: This is not error.', 'result': False},
+            {'content': 'This is a testharness.js-based test.\nNo errors here.', 'result': False},
+            {'content': 'This is not a CONSOLE ERROR, sorry.', 'result': False},
+        ]
+
+        for data in test_data:
+            self.assertEqual(data['result'], testharness_results.is_testharness_output_with_console_errors(data['content']))