Add PRESUBMIT checks for not required testharness expected files.

Tools/Scripts/webkitpy/layout_tests/testharness/testharness_results_checker_unittest.py

Index: Tools/Scripts/webkitpy/layout_tests/testharness/testharness_results_checker_unittest.py
diff --git a/Tools/Scripts/webkitpy/layout_tests/testharness/testharness_results_checker_unittest.py b/Tools/Scripts/webkitpy/layout_tests/testharness/testharness_results_checker_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..1ed9c81c26054849a5d33b36c22f9a447285a3b3
--- /dev/null
+++ b/Tools/Scripts/webkitpy/layout_tests/testharness/testharness_results_checker_unittest.py
@@ -0,0 +1,43 @@
+# 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 webkitpy.thirdparty.unittest2 as unittest
+
+from webkitpy.layout_tests.testharness import testharness_results_checker
+
+
+class TestHarnessResultCheckerTest(unittest.TestCase):
+
+    def test_is_testharness_output(self):
+        test_data = [
+            {'content': 'foo', 'result': False},
+            {'content': '', 'result': False},
+            {'content': '   ', 'result': False},
+            {'content': 'This is a testharness.js-based test.\nHarness: the test ran to completion.', 'result': True},
+            {'content': '\n \r This is a testharness.js-based test. \n \r  \n \rHarness: the test ran to completion.   \n\n', 'result': True},
+            {'content': '   This    \nis a testharness.js-based test.\nHarness: the test ran to completion.', 'result': False},
+            {'content': 'This is a testharness.js-based test.  Harness: the test ran to completion.', 'result': False},
+            {'content': 'This is a testharness.js-based test.\nFoo bar \n Harness: the test ran to completion.', 'result': True},
+            {'content': 'This is a testharness.js-based test.\nFAIL: bah \n Harness: the test ran to completion.', 'result': True},
+        ]
+
+        for data in test_data:
+            self.assertEqual(data['result'], testharness_results_checker.is_testharness_output(data['content']))
+
+    def test_is_testharness_output_passing(self):
+        test_data = [
+            {'content': 'This is a testharness.js-based test.\n   Harness: the test ran to completion.', 'result': True},
+            {'content': 'This is a testharness.js-based test.\n  \n Harness: the test ran to completion.', 'result': False},
+            {'content': 'This is a testharness.js-based test.\n PASS: foo bar \n Harness: the test ran to completion.', 'result': True},
+            {'content': 'This is a testharness.js-based test.\n PASS: foo bar FAIL  \n Harness: the test ran to completion.', 'result': True},
+            {'content': 'This is a testharness.js-based test.\n PASS: foo bar \nFAIL  \n Harness: the test ran to completion.', 'result': False},
+            {'content': 'This is a testharness.js-based test.\n CONSOLE ERROR: BLAH  \n Harness: the test ran to completion.', 'result': True},
+            {'content': 'This is a testharness.js-based test.\n Foo bar \n Harness: the test ran to completion.', 'result': False},
+            {'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},
+        ]
+
+        for data in test_data:
+            self.assertEqual(data['result'], testharness_results_checker.is_testharness_output_passing(data['content']))