[heap] Limit friendship of the Heap class to essentials.

src/objects.cc

 // Copyright 2013 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 "src/objects.h"
 
 #include <iomanip>
 #include <sstream>
 
 #include "src/accessors.h"
@@ skipping 14089 matching lines @@
   }
 }
 
 
 void StringTable::EnsureCapacityForDeserialization(Isolate* isolate,
                                                    int expected) {
   Handle<StringTable> table = isolate->factory()->string_table();
   // We need a key instance for the virtual hash function.
   InternalizedStringKey dummy_key(Handle<String>::null());
   table = StringTable::EnsureCapacity(table, expected, &dummy_key);
-  isolate->factory()->set_string_table(table);
+  isolate->heap()->SetRootStringTable(*table);
 }
 
 
 Handle<String> StringTable::LookupString(Isolate* isolate,
                                          Handle<String> string) {
   InternalizedStringKey key(string);
   return LookupKey(isolate, &key);
 }
 
 
@@ skipping 13 matching lines @@
   Handle<Object> string = key->AsHandle(isolate);
   // There must be no attempts to internalize strings that could throw
   // InvalidStringLength error.
   CHECK(!string.is_null());
 
   // Add the new string and return it along with the string table.
   entry = table->FindInsertionEntry(key->Hash());
   table->set(EntryToIndex(entry), *string);
   table->ElementAdded();
 
-  isolate->factory()->set_string_table(table);
+  isolate->heap()->SetRootStringTable(*table);
   return Handle<String>::cast(string);
 }
 
 
 String* StringTable::LookupKeyIfExists(Isolate* isolate, HashTableKey* key) {
   Handle<StringTable> table = isolate->factory()->string_table();
   int entry = table->FindEntry(key);
   if (entry != kNotFound) return String::cast(table->KeyAt(entry));
   return NULL;
 }
@@ skipping 1668 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 }  // namespace internal
 }  // namespace v8