Update the context if Set on slow-mode argument targets an aliased arguments entry

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 487 matching lines @@
   'built-ins/GeneratorPrototype/return/try-finally-before-try': [FAIL],
   'built-ins/GeneratorPrototype/return/try-finally-following-finally': [FAIL],
   'built-ins/GeneratorPrototype/return/try-finally-nested-try-catch-within-catch': [FAIL],
   'built-ins/GeneratorPrototype/return/try-finally-nested-try-catch-within-finally': [FAIL],
   'built-ins/GeneratorPrototype/return/try-finally-nested-try-catch-within-inner-try': [FAIL],
   'built-ins/GeneratorPrototype/return/try-finally-nested-try-catch-within-outer-try-after-nested': [FAIL],
   'built-ins/GeneratorPrototype/return/try-finally-nested-try-catch-within-outer-try-before-nested': [FAIL],
   'built-ins/GeneratorPrototype/return/try-finally-within-finally': [FAIL],
   'built-ins/GeneratorPrototype/return/try-finally-within-try': [FAIL],
 
-   # https://code.google.com/p/v8/issues/detail?id=4177

[arv (Not doing code reviews), 2015/07/10 15:54:48]

Woot!

-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-2': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-3': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-4': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-delete-2': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-delete-3': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-delete-4': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-nonwritable-3': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-nonwritable-4': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-nonwritable-5': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-strict-delete-2': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-strict-delete-3': [FAIL],
-   'language/arguments-object/mapped/mapped-arguments-nonconfigurable-strict-delete-4': [FAIL],
-
    # https://code.google.com/p/v8/issues/detail?id=811
   'language/expressions/assignment/destructuring/array-elem-elision': [FAIL],
   'language/expressions/assignment/destructuring/array-elem-init-assignment': [FAIL],
   'language/expressions/assignment/destructuring/array-elem-init-evaluation': [FAIL],
   'language/expressions/assignment/destructuring/array-elem-init-in': [FAIL],
   'language/expressions/assignment/destructuring/array-elem-init-let': [FAIL],
   'language/expressions/assignment/destructuring/array-elem-init-order': [FAIL],
   'language/expressions/assignment/destructuring/array-elem-init-simple-no-strict': [FAIL],
   'language/expressions/assignment/destructuring/array-elem-init-yield-expr': [FAIL],
   'language/expressions/assignment/destructuring/array-elem-init-yield-ident-valid': [FAIL],
@@ skipping 248 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'
 ]