[es6] silence access-check failure for well-known symbol properties

src/heap/heap-inl.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.
 
 #ifndef V8_HEAP_HEAP_INL_H_
 #define V8_HEAP_HEAP_INL_H_
 
 #include <cmath>
 
 #include "src/base/platform/platform.h"
@@ skipping 52 matching lines @@
 #undef STRING_ACCESSOR
 
 #define SYMBOL_ACCESSOR(name) \
   Symbol* Heap::name() { return Symbol::cast(roots_[k##name##RootIndex]); }
 PRIVATE_SYMBOL_LIST(SYMBOL_ACCESSOR)
 #undef SYMBOL_ACCESSOR
 
 #define SYMBOL_ACCESSOR(name, description) \
   Symbol* Heap::name() { return Symbol::cast(roots_[k##name##RootIndex]); }
 PUBLIC_SYMBOL_LIST(SYMBOL_ACCESSOR)
+WELL_KNOWN_SYMBOL_LIST(SYMBOL_ACCESSOR)
 #undef SYMBOL_ACCESSOR
 
 #define ROOT_ACCESSOR(type, name, camel_name)                                 \
   void Heap::set_##name(type* value) {                                        \
     /* The deserializer makes use of the fact that these common roots are */  \
     /* never in new space and never on a page that is being compacted.    */  \
     DCHECK(!deserialization_complete() ||                                     \
            RootCanBeWrittenAfterInitialization(k##camel_name##RootIndex));    \
     DCHECK(k##camel_name##RootIndex >= kOldSpaceRoots || !InNewSpace(value)); \
     roots_[k##camel_name##RootIndex] = value;                                 \
@@ skipping 616 matching lines @@
 
 void VerifySmisVisitor::VisitPointers(Object** start, Object** end) {
   for (Object** current = start; current < end; current++) {
     CHECK((*current)->IsSmi());
   }
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_HEAP_INL_H_