Divorce es-staging from harmony flag and activate destructuring on ClusterFuzz

src/flag-definitions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file defines all of the flags.  It is separated into different section,
 // for Debug, Release, Logging and Profiling, etc.  To add a new flag, find the
 // correct section, and use one of the DEFINE_ macros, without a trailing ';'.
 //
 // This include does not have a guard, because it is a template-style include,
 // which can be included multiple times in different modes.  It expects to have
@@ skipping 161 matching lines @@
 
 // Flags for language modes and experimental language features.
 DEFINE_BOOL(use_strict, false, "enforce strict mode")
 DEFINE_BOOL(use_strong, false, "enforce strong mode")
 DEFINE_IMPLICATION(use_strong, use_strict)
 
 DEFINE_BOOL(strong_mode, false, "experimental strong language mode")
 DEFINE_IMPLICATION(use_strong, strong_mode)
 DEFINE_BOOL(strong_this, true, "don't allow 'this' to escape from constructors")
 
-DEFINE_BOOL(es_staging, false, "enable all completed harmony features")
+DEFINE_BOOL(es_staging, false,
+            "enable test-worthy harmony features (for internal use only)")
 DEFINE_BOOL(harmony, false, "enable all completed harmony features")
 DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features")
-DEFINE_IMPLICATION(harmony, es_staging)
 DEFINE_IMPLICATION(es_staging, harmony)
 
 DEFINE_BOOL(legacy_const, true, "legacy semantics for const in sloppy mode")
 // ES2015 const semantics are staged
-DEFINE_NEG_IMPLICATION(es_staging, legacy_const)
+DEFINE_NEG_IMPLICATION(harmony, legacy_const)
+
+// Activate on ClusterFuzz.
+DEFINE_IMPLICATION(es_staging, harmony_destructuring)
 
 // Features that are still work in progress (behind individual flags).
 #define HARMONY_INPROGRESS(V)                                         \
   V(harmony_modules, "harmony modules")                               \
   V(harmony_proxies, "harmony proxies")                               \
   V(harmony_unicode_regexps, "harmony unicode regexps")               \
   V(harmony_reflect, "harmony Reflect API")                           \
   V(harmony_sloppy_function, "harmony sloppy function block scoping") \
   V(harmony_destructuring, "harmony destructuring")                   \
   V(harmony_default_parameters, "harmony default parameters")         \
@@ skipping 24 matching lines @@
 // esN directory.
 
 
 #define FLAG_INPROGRESS_FEATURES(id, description) \
   DEFINE_BOOL(id, false, "enable " #description " (in progress)")
 HARMONY_INPROGRESS(FLAG_INPROGRESS_FEATURES)
 #undef FLAG_INPROGRESS_FEATURES
 
 #define FLAG_STAGED_FEATURES(id, description) \
   DEFINE_BOOL(id, false, "enable " #description) \
-  DEFINE_IMPLICATION(es_staging, id)
+  DEFINE_IMPLICATION(harmony, id)
 HARMONY_STAGED(FLAG_STAGED_FEATURES)
 #undef FLAG_STAGED_FEATURES
 
 #define FLAG_SHIPPING_FEATURES(id, description) \
   DEFINE_BOOL(id, true, "enable " #description) \
   DEFINE_NEG_NEG_IMPLICATION(harmony_shipping, id)
 HARMONY_SHIPPING(FLAG_SHIPPING_FEATURES)
 #undef FLAG_SHIPPING_FEATURES
 
 
@@ skipping 869 matching lines @@
 #undef DEFINE_ALIAS_FLOAT
 #undef DEFINE_ALIAS_ARGS
 
 #undef FLAG_MODE_DECLARE
 #undef FLAG_MODE_DEFINE
 #undef FLAG_MODE_DEFINE_DEFAULTS
 #undef FLAG_MODE_META
 #undef FLAG_MODE_DEFINE_IMPLICATIONS
 
 #undef COMMA