Enable --harmony-trailing-commas

test/test262/test262.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 323 matching lines @@
   'language/white-space/mongolian-vowel-separator-eval': [FAIL],
   'built-ins/RegExp/S15.10.2.12_A2_T1': [FAIL],
   'built-ins/RegExp/S15.10.2.12_A1_T1': [FAIL],
   'built-ins/parseFloat/S15.1.2.3_A2_T10_U180E': [FAIL],
   'built-ins/parseInt/S15.1.2.2_A2_T10_U180E': [FAIL],
   'built-ins/String/prototype/trim/u180e': [FAIL],
   'built-ins/Number/S9.3.1_A3_T2_U180E': [FAIL],
   'built-ins/Number/S9.3.1_A3_T1_U180E': [FAIL],
   'built-ins/Number/S9.3.1_A2_U180E': [FAIL],
 
-  # https://bugs.chromium.org/p/v8/issues/detail?id=5051
-  'language/expressions/arrow-function/params-trailing-comma': ['--harmony-trailing-commas'],
-  'language/expressions/arrow-function/params-trailing-comma-length': ['--harmony-trailing-commas'],
-  'language/expressions/call/trailing-comma': ['--harmony-trailing-commas'],
-  'language/expressions/function/params-trailing-comma': ['--harmony-trailing-commas'],
-  'language/expressions/function/params-trailing-comma-arguments': ['--harmony-trailing-commas'],
-  'language/expressions/function/params-trailing-comma-length': ['--harmony-trailing-commas'],
-  'language/expressions/generators/params-trailing-comma': ['--harmony-trailing-commas'],
-  'language/expressions/generators/params-trailing-comma-arguments': ['--harmony-trailing-commas'],
-  'language/expressions/generators/params-trailing-comma-length': ['--harmony-trailing-commas'],
-  'language/expressions/object/method-definition/params-trailing-comma': ['--harmony-trailing-commas'],
-  'language/expressions/object/method-definition/params-trailing-comma-arguments': ['--harmony-trailing-commas'],
-  'language/expressions/object/method-definition/params-trailing-comma-length': ['--harmony-trailing-commas'],
-  'language/statements/class/definition/params-trailing-comma': ['--harmony-trailing-commas'],
-  'language/statements/class/definition/params-trailing-comma-arguments': ['--harmony-trailing-commas'],
-  'language/statements/class/definition/params-trailing-comma-length': ['--harmony-trailing-commas'],
-  'language/statements/function/params-trailing-comma': ['--harmony-trailing-commas'],
-  'language/statements/function/params-trailing-comma-arguments': ['--harmony-trailing-commas'],
-  'language/statements/function/params-trailing-comma-length': ['--harmony-trailing-commas'],
-  'language/statements/generators/params-trailing-comma': ['--harmony-trailing-commas'],
-  'language/statements/generators/params-trailing-comma-length': ['--harmony-trailing-commas'],
-
   # https://bugs.chromium.org/p/v8/issues/detail?id=4698
   'language/expressions/call/tco-call-args': ['--harmony-tailcalls'],
   'language/expressions/call/tco-member-args': ['--harmony-tailcalls'],
   'language/expressions/comma/tco-final': ['--harmony-tailcalls'],
   'language/expressions/conditional/tco-cond': ['--harmony-tailcalls'],
   'language/expressions/conditional/tco-pos': ['--harmony-tailcalls'],
   'language/expressions/logical-and/tco-right': ['--harmony-tailcalls'],
   'language/expressions/logical-or/tco-right': ['--harmony-tailcalls'],
   'language/expressions/tagged-template/tco-call': ['--harmony-tailcalls'],
   'language/expressions/tagged-template/tco-member': ['--harmony-tailcalls'],
@@ skipping 264 matching lines @@
 
 ['variant == asm_wasm', {
   '*': [SKIP],
 }],  # variant == asm_wasm
 
 ['variant == wasm_traps', {
   '*': [SKIP],
 }],  # variant == wasm_traps
 
 ]