Hide heap methods where possible.

src/heap.cc

 // 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.
 
 #include "v8.h"
 
 #include "accessors.h"
 #include "api.h"
 #include "bootstrapper.h"
 #include "codegen.h"
@@ skipping 4318 matching lines @@
   Symbol::cast(result)->set_hash_field(
       Name::kIsNotArrayIndexMask | (hash << Name::kHashShift));
   Symbol::cast(result)->set_name(undefined_value());
   Symbol::cast(result)->set_flags(Smi::FromInt(0));
 
   ASSERT(!Symbol::cast(result)->is_private());
   return result;
 }
 
 
-MaybeObject* Heap::AllocatePrivateSymbol() {
-  MaybeObject* maybe = AllocateSymbol();
-  Symbol* symbol;
-  if (!maybe->To(&symbol)) return maybe;
-  symbol->set_is_private(true);
-  return symbol;
-}
-
-
 MaybeObject* Heap::AllocateStruct(InstanceType type) {
   Map* map;
   switch (type) {
 #define MAKE_CASE(NAME, Name, name) \
     case NAME##_TYPE: map = name##_map(); break;
 STRUCT_LIST(MAKE_CASE)
 #undef MAKE_CASE
     default:
       UNREACHABLE();
       return exception();
@@ skipping 2148 matching lines @@
       static_cast<int>(object_sizes_last_time_[index]));
   CODE_AGE_LIST_COMPLETE(ADJUST_LAST_TIME_OBJECT_COUNT)
 #undef ADJUST_LAST_TIME_OBJECT_COUNT
 
   OS::MemCopy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
   OS::MemCopy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));
   ClearObjectStats();
 }
 
 } }  // namespace v8::internal