Support large objects in the serializer/deserializer.

src/heap/heap-inl.h

Index: src/heap/heap-inl.h
diff --git a/src/heap/heap-inl.h b/src/heap/heap-inl.h
index e658224aca11190003676d9bbd2df945e1c88508..203484368705727fe5dab16595e808a290993ddd 100644
--- a/src/heap/heap-inl.h
+++ b/src/heap/heap-inl.h
@@ -221,6 +221,14 @@ AllocationResult Heap::AllocateRaw(int size_in_bytes, AllocationSpace space,
 }
 
 
+HeapObject* Heap::ForceAllocateLargeObject(int size_in_bytes,
+                                           Executability executable) {
+  AlwaysAllocateScope scope(isolate());
+  AllocationResult result = lo_space_->AllocateRaw(size_in_bytes, executable);
+  return HeapObject::cast(result.ToObjectChecked());
+}
+
+
 void Heap::OnAllocationEvent(HeapObject* object, int size_in_bytes) {
   HeapProfiler* profiler = isolate_->heap_profiler();
   if (profiler->is_tracking_allocations()) {