Partial rollback of Promise error checking

test/mjsunit/mjsunit.status

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 36 matching lines @@
   'regress/regress-2653': [SKIP],
 
   # Issue 3784: setters-on-elements is flaky
   'setters-on-elements': [PASS, FAIL],
 
   # Issue 3641: The new 'then' semantics suppress some exceptions.
   # These tests may be changed or removed when 'chain' is deprecated.
   'es6/debug-promises/reject-with-throw-in-reject': [FAIL],
   'es6/debug-promises/reject-with-undefined-reject': [FAIL],
   'es6/debug-promises/reject-with-invalid-reject': [FAIL],
-  'es6/debug-promises/throw-with-undefined-reject': [FAIL],
 
   # Issue 4093: This test will be updated in the course of implementing
   # @@species, when TypedArray support is added.
   'regress/regress-544991': [SKIP],
 
   ##############################################################################
   # TurboFan compiler failures.
 
   # TODO(verwaest): Some tests are over-restrictive about object layout.
   'array-constructor-feedback': [PASS, NO_VARIANTS],
@@ skipping 1121 matching lines @@
 
 ##############################################################################
 ['gcov_coverage', {
   # Tests taking too long.
   'array-functions-prototype-misc': [SKIP],
   'strong/implicit-conversions': [SKIP],
   'strong/load-element-mutate-backing-store': [SKIP],
 }],  # 'gcov_coverage'
 
 ]