[es6] Add appropriate ToString call to String.prototype.normalize

test/test262-es6/test262-es6.status

Index: test/test262-es6/test262-es6.status
diff --git a/test/test262-es6/test262-es6.status b/test/test262-es6/test262-es6.status
index ae72ea9d1b7b0da4b57bb12bc4846d1dad3801cc..8e8ab909840b5348817c64af80eab71452fab776 100644
--- a/test/test262-es6/test262-es6.status
+++ b/test/test262-es6/test262-es6.status
@@ -737,14 +737,6 @@
   'built-ins/RegExp/prototype/source/name': [FAIL],
   'built-ins/RegExp/prototype/sticky/name': [FAIL],
 
-  # https://code.google.com/p/v8/issues/detail?id=4350
-  # Some of these pass when i18n.js is not loaded and fail when it is
-  'built-ins/String/prototype/normalize/return-abrupt-from-form': [PASS, FAIL],
-  'built-ins/String/prototype/normalize/return-abrupt-from-form-as-symbol': [PASS, FAIL],
-  'built-ins/String/prototype/normalize/return-abrupt-from-this': [FAIL],
-  'built-ins/String/prototype/normalize/return-abrupt-from-this-as-symbol': [FAIL],
-  'built-ins/String/prototype/normalize/return-normalized-string-from-coerced-form': [PASS, FAIL],
-
   # https://code.google.com/p/v8/issues/detail?id=4360
   'intl402/Collator/10.1.1_1': [FAIL],
   'intl402/DateTimeFormat/12.1.1_1': [FAIL],