Make NeedsRebaseline illegal in layout_test TestExpectations for now.

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/models/test_expectations_unittest.py

Index: third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/models/test_expectations_unittest.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/models/test_expectations_unittest.py b/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/models/test_expectations_unittest.py
index d7e03a8932a9f38ed0181ec0c21cd3ccc8375408..430f5687318ccb464fac805131fe038a35eec108 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/models/test_expectations_unittest.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/models/test_expectations_unittest.py
@@ -189,7 +189,8 @@ class MiscTests(Base):
         s = self._exp.get_test_set(CRASH)
         self.assertEqual(s, set(['failures/expected/crash.html', 'failures/expected/image_checksum.html']))
 
-    def test_needs_rebaseline_reftest(self):
+    # TODO(crbug.com/188963003) - reenable this when the ARB is restarted.
+    def disabled_test_needs_rebaseline_reftest(self):
         try:
             filesystem = self._port.host.filesystem
             filesystem.write_text_file(filesystem.join(self._port.layout_tests_dir(),
@@ -208,7 +209,8 @@ Bug(user) failures/expected/needsmanualrebaseline.html [ NeedsManualRebaseline ]
 expectations:2 A reftest cannot be marked as NeedsRebaseline/NeedsManualRebaseline failures/expected/needsmanualrebaseline.html"""
             self.assertEqual(str(e), warnings)
 
-    def test_parse_warning(self):
+    # TODO(crbug.com/188963003) - reenable this when the ARB is restarted.
+    def disabled_test_parse_warning(self):
         try:
             filesystem = self._port.host.filesystem
             filesystem.write_text_file(filesystem.join(self._port.layout_tests_dir(), 'disabled-test.html-disabled'), 'content')