Stage harmony trailing commas

BUG=v8:5051
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

Review-Url: https://codereview.chromium.org/2484223004
Cr-Commit-Position: refs/heads/master@{#40942}

src/flag-definitions.h

@@ -201,8 +201,6 @@ DEFINE_IMPLICATION(es_staging, move_object_start)
   V(harmony_do_expressions, "harmony do-expressions")                   \
   V(harmony_regexp_named_captures, "harmony regexp named captures")     \
   V(harmony_regexp_property, "harmony unicode regexp property classes") \
-  V(harmony_trailing_commas,                                            \
-    "harmony trailing commas in function parameter lists")              \
   V(harmony_class_fields, "harmony public fields in class literals")
 
 // Features that are complete (but still behind --harmony/es-staging flag).
@@ -211,6 +209,8 @@ DEFINE_IMPLICATION(es_staging, move_object_start)
   V(harmony_restrictive_generators,                         \
     "harmony restrictions on generator declarations")       \
   V(harmony_tailcalls, "harmony tail calls")                \
+  V(harmony_trailing_commas,                                \
+    "harmony trailing commas in function parameter lists")  \
   V(harmony_string_padding, "harmony String-padding methods")
 
 #ifdef V8_I18N_SUPPORT

test/test262/test262.status

@@ -396,26 +396,9 @@
   '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': [FAIL],
-  'language/expressions/arrow-function/params-trailing-comma-length': [FAIL],
-  'language/expressions/function/params-trailing-comma': [FAIL],
-  'language/expressions/function/params-trailing-comma-arguments': [FAIL],
-  'language/expressions/function/params-trailing-comma-length': [FAIL],
-  'language/expressions/generators/params-trailing-comma': [FAIL],
-  'language/expressions/generators/params-trailing-comma-arguments': [FAIL],
-  'language/expressions/generators/params-trailing-comma-length': [FAIL],
-  'language/expressions/object/method-definition/params-trailing-comma': [FAIL],
-  'language/expressions/object/method-definition/params-trailing-comma-arguments': [FAIL],
-  'language/expressions/object/method-definition/params-trailing-comma-length': [FAIL],
+  'language/expressions/call/trailing-comma': [FAIL],
   'language/statements/class/definition/params-trailing-comma': [FAIL],
   'language/statements/class/definition/params-trailing-comma-arguments': [FAIL],
-  'language/statements/class/definition/params-trailing-comma-length': [FAIL],
-  'language/statements/function/params-trailing-comma': [FAIL],
-  'language/statements/function/params-trailing-comma-arguments': [FAIL],
-  'language/statements/function/params-trailing-comma-length': [FAIL],
-  'language/statements/generators/params-trailing-comma': [FAIL],
-  'language/statements/generators/params-trailing-comma-arguments': [FAIL],
-  'language/statements/generators/params-trailing-comma-length': [FAIL],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=5326
   'language/expressions/super/call-new-target-undef': [FAIL],