Revert of Revert "In RegExp, lastIndex is read with ToLength, not ToInteger"

test/test262-es6/test262-es6.status

 # Copyright 2011 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 403 matching lines @@
   # https://code.google.com/p/v8/issues/detail?id=4119
   'built-ins/RegExp/15.10.4.1-1': [FAIL],
   'built-ins/RegExp/S15.10.3.1_A2_T1': [FAIL],
   'built-ins/RegExp/S15.10.3.1_A2_T2': [FAIL],
   'built-ins/RegExp/S15.10.4.1_A2_T1': [FAIL],
   'built-ins/RegExp/S15.10.4.1_A2_T2': [FAIL],
 
   # https://code.google.com/p/v8/issues/detail?id=4003
   'built-ins/RegExp/prototype/15.10.6': [FAIL],
 
-  # https://code.google.com/p/v8/issues/detail?id=4244
-  'built-ins/RegExp/prototype/exec/S15.10.6.2_A5_T3': [FAIL],
-
   # https://code.google.com/p/v8/issues/detail?id=4006
   'built-ins/String/prototype/S15.5.4_A1': [FAIL],
   'built-ins/String/prototype/S15.5.4_A2': [FAIL],
   'built-ins/String/prototype/S15.5.4_A3': [FAIL],
   'language/expressions/property-accessors/S11.2.1_A4_T5': [FAIL],
 
   # https://code.google.com/p/v8/issues/detail?id=4245
   'built-ins/String/prototype/split/S15.5.4.14_A2_T37': [FAIL],
 
   # The order of adding the name property is wrong
@@ skipping 318 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'
 ]