[parser] Allow duplicate __proto__ keys in patterns

test/test262/test262.status

Index: test/test262/test262.status
diff --git a/test/test262/test262.status b/test/test262/test262.status
index 91e73611ba6c3eaaeb93ca7d6ea543fbcbd6f381..d069d03091de731a26f67116376587e3a5a33402 100644
--- a/test/test262/test262.status
+++ b/test/test262/test262.status
@@ -352,9 +352,6 @@
   'annexB/built-ins/Object/prototype/__lookupGetter__/this-non-obj': [FAIL],
   'annexB/built-ins/Object/prototype/__lookupSetter__/this-non-obj': [FAIL],
 
-  # https://bugs.chromium.org/p/v8/issues/detail?id=5121
-  'language/expressions/assignment/destructuring/obj-prop-__proto__dup': [FAIL],

[adamk, 2016/08/18 20:35:22]

Please add a test-parsing.cc test as well to make sure we're covering both the
parser and preparser (this test will likely only exercise the parser).

[gsathya, 2016/08/19 20:11:18]

Added. Let me know if there if there are any that are redundant (or others that
I may have missed).

-
   # https://bugs.chromium.org/p/v8/issues/detail?id=4973
   'language/literals/numeric/non-octal-decimal-integer-strict': [FAIL],