[serializer] allocate global proxy with the expected size.

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 794 matching lines @@
 }
 
 int Heap::GetNextTemplateSerialNumber() {
   int next_serial_number = next_template_serial_number()->value() + 1;
   set_next_template_serial_number(Smi::FromInt(next_serial_number));
   return next_serial_number;
 }
 
 void Heap::SetSerializedTemplates(FixedArray* templates) {
   DCHECK_EQ(empty_fixed_array(), serialized_templates());
+  DCHECK(isolate()->serializer_enabled());
   set_serialized_templates(templates);
 }
 
+void Heap::SetSerializedGlobalProxySizes(FixedArray* sizes) {
+  DCHECK_EQ(empty_fixed_array(), serialized_global_proxy_sizes());
+  DCHECK(isolate()->serializer_enabled());
+  set_serialized_global_proxy_sizes(sizes);
+}
+
 void Heap::CreateObjectStats() {
   if (V8_LIKELY(FLAG_gc_stats == 0)) return;
   if (!live_object_stats_) {
     live_object_stats_ = new ObjectStats(this);
   }
   if (!dead_object_stats_) {
     dead_object_stats_ = new ObjectStats(this);
   }
 }
 
@@ skipping 21 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_