[intl] Implement Intl.PluralRules

test/test262/test262.status

 # Copyright 2011 the V8 project authors. All rights reserved.
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 # modification, are permitted provided that the following conditions are
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 #
 #     * 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 408 matching lines @@
   'built-ins/String/prototype/toLocaleLowerCase/supplementary_plane': ['--icu-case-mapping'],
   'built-ins/String/prototype/toLocaleLowerCase/special_casing_conditional': ['--icu-case-mapping'],
   'intl402/String/prototype/toLocaleLowerCase/special_casing_Azeri': ['--icu-case-mapping'],
   'intl402/String/prototype/toLocaleLowerCase/special_casing_Lithuanian': ['--icu-case-mapping'],
   'intl402/String/prototype/toLocaleLowerCase/special_casing_Turkish': ['--icu-case-mapping'],
   'intl402/String/prototype/toLocaleUpperCase/special_casing_Azeri': ['--icu-case-mapping'],
   'intl402/String/prototype/toLocaleUpperCase/special_casing_Lithuanian': ['--icu-case-mapping'],
   'intl402/String/prototype/toLocaleUpperCase/special_casing_Turkish': ['--icu-case-mapping'],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=5601
-  'intl402/PluralRules/*': [SKIP],
+  'intl402/PluralRules/*': ['--harmony-plural-rules'],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=5855
   'language/expressions/async-generators/*': [SKIP],
 
   # SharedArrayBuffer tests that require flags
   'built-ins/SharedArrayBuffer/*': ['--harmony-sharedarraybuffer'],
   'built-ins/Atomics/*': ['--harmony-sharedarraybuffer'],
   'built-ins/DataView/buffer-does-not-have-arraybuffer-data-throws-sab': ['--harmony-sharedarraybuffer'],
   'built-ins/DataView/buffer-reference-sab': ['--harmony-sharedarraybuffer'],
   'built-ins/DataView/byteoffset-is-negative-throws-sab': ['--harmony-sharedarraybuffer'],
@@ skipping 123 matching lines @@
   'built-ins/Array/prototype/Symbol.iterator': [FAIL],
   'built-ins/Array/prototype/values/returns-iterator': [FAIL],
   'built-ins/Array/prototype/values/returns-iterator-from-object': [FAIL],
   'built-ins/Array/prototype/values/prop-desc': [FAIL],
   'built-ins/Array/prototype/values/name': [FAIL],
   'built-ins/Array/prototype/values/length': [FAIL],
   'built-ins/Array/prototype/values/iteration': [FAIL],
   'built-ins/Array/prototype/values/iteration-mutable': [FAIL],
   'built-ins/Array/prototype/Symbol.unscopables/value': [FAIL],
 
+  # https://github.com/tc39/proposal-intl-plural-rules/issues/29
+  'intl402/PluralRules/prototype/prototype': [FAIL],
+
   ############################ INVALID TESTS #############################
 
   # Test makes unjustified assumptions about the number of calls to SortCompare.
   # Test262 Bug: https://bugs.ecmascript.org/show_bug.cgi?id=596
   'built-ins/Array/prototype/sort/bug_596_1': [PASS, FAIL_OK],
 
   # https://github.com/tc39/test262/pull/688#pullrequestreview-14025354
   'built-ins/Function/internals/Construct/derived-this-uninitialized-realm': [FAIL],
 
   # https://github.com/tc39/test262/pull/688/files#r93657665
@@ skipping 109 matching lines @@
 
 ['variant == asm_wasm', {
   '*': [SKIP],
 }],  # variant == asm_wasm
 
 ['variant == wasm_traps', {
   '*': [SKIP],
 }],  # variant == wasm_traps
 
 ]