--verify-predictable mode added for ensuring that GC behaves deterministically.

src/serialize.h

Index: src/serialize.h
diff --git a/src/serialize.h b/src/serialize.h
index d58e8332ce4c09a7281e222842dab7d37f30a814..5e75fef160da1c39fd4763de5c79c41de68e7cf9 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -274,10 +274,6 @@ class Deserializer: public SerializerDeserializer {
   Address Allocate(int space_index, int size) {
     Address address = high_water_[space_index];
     high_water_[space_index] = address + size;
-    HeapProfiler* profiler = isolate_->heap_profiler();
-    if (profiler->is_tracking_allocations()) {
-      profiler->AllocationEvent(address, size);
-    }
     return address;
   }