Fix missing write barrier in deserialization. Issue 1783.

src/serialize.h

Index: src/serialize.h
===================================================================
--- src/serialize.h	(revision 9722)
+++ src/serialize.h	(working copy)
@@ -356,7 +356,11 @@
     UNREACHABLE();
   }
 
-  void ReadChunk(Object** start, Object** end, int space, Address address);
+  void ReadChunk(HeapObject* host,
+                 Object** start,
+                 Object** end,
+                 int space,
+                 Address address);
   HeapObject* GetAddressFromStart(int space);
   inline HeapObject* GetAddressFromEnd(int space);
   Address Allocate(int space_number, Space* space, int size);