ES6: Error functions should extend Error

test/test262-es6/test262-es6.status

 # Copyright 2011 the V8 project authors. All rights reserved.
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 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
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 #     * 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 251 matching lines @@
   'built-ins/Object/defineProperty/15.2.3.6-4-293-4': [FAIL],
   'built-ins/Object/freeze/15.2.3.9-1': [FAIL],
   'built-ins/Object/freeze/15.2.3.9-1-1': [FAIL],
   'built-ins/Object/freeze/15.2.3.9-1-2': [FAIL],
   'built-ins/Object/freeze/15.2.3.9-1-3': [FAIL],
   'built-ins/Object/freeze/15.2.3.9-1-4': [FAIL],
   'built-ins/Object/getOwnPropertyDescriptor/15.2.3.3-4-212': [FAIL],
   'built-ins/Object/getOwnPropertyDescriptor/15.2.3.3-4-213': [FAIL],
   'built-ins/Object/getOwnPropertyDescriptor/15.2.3.3-4-214': [FAIL],
   'built-ins/Object/getOwnPropertyDescriptor/15.2.3.3-4-215': [FAIL],
-  'built-ins/Object/getPrototypeOf/15.2.3.2-2-12': [FAIL],
-  'built-ins/Object/getPrototypeOf/15.2.3.2-2-13': [FAIL],
-  'built-ins/Object/getPrototypeOf/15.2.3.2-2-14': [FAIL],
-  'built-ins/Object/getPrototypeOf/15.2.3.2-2-15': [FAIL],
-  'built-ins/Object/getPrototypeOf/15.2.3.2-2-16': [FAIL],
-  'built-ins/Object/getPrototypeOf/15.2.3.2-2-17': [FAIL],
   'built-ins/Object/isExtensible/15.2.3.13-1': [FAIL],
   'built-ins/Object/isExtensible/15.2.3.13-1-1': [FAIL],
   'built-ins/Object/isExtensible/15.2.3.13-1-2': [FAIL],
   'built-ins/Object/isExtensible/15.2.3.13-1-3': [FAIL],
   'built-ins/Object/isExtensible/15.2.3.13-1-4': [FAIL],
   'built-ins/Object/isFrozen/15.2.3.12-1': [FAIL],
   'built-ins/Object/isFrozen/15.2.3.12-1-1': [FAIL],
   'built-ins/Object/isFrozen/15.2.3.12-1-2': [FAIL],
   'built-ins/Object/isFrozen/15.2.3.12-1-3': [FAIL],
   'built-ins/Object/isFrozen/15.2.3.12-1-4': [FAIL],
@@ skipping 268 matching lines @@
 
   # BUG(3251225): Tests that timeout with --nocrankshaft.
   'built-ins/decodeURI/S15.1.3.1_A2.4_T1': [SKIP],
   'built-ins/decodeURI/S15.1.3.1_A2.5_T1': [SKIP],
   'built-ins/decodeURIComponent/S15.1.3.2_A2.4_T1': [SKIP],
   'built-ins/decodeURIComponent/S15.1.3.2_A2.5_T1': [SKIP],
   'built-ins/encodeURI/S15.1.3.3_A2.3_T1': [SKIP],
   'built-ins/encodeURIComponent/S15.1.3.4_A2.3_T1': [SKIP],
 }],  # 'arch == arm or arch == mipsel or arch == mips or arch == arm64'
 ]