Special case ConstantPoolArray in MarkCompactCollector::MigrateObject.

src/mark-compact.h

Index: src/mark-compact.h
diff --git a/src/mark-compact.h b/src/mark-compact.h
index ae6767ff643ea4c3ecdc8f666491e1230b68d51b..d5eadd89488c3de3198bd5b734f0caa9afc99588 100644
--- a/src/mark-compact.h
+++ b/src/mark-compact.h
@@ -895,6 +895,9 @@ class MarkCompactCollector {
 
   void ParallelSweepSpaceComplete(PagedSpace* space);
 
+  // Updates store buffer and slot buffer for a pointer in a migrating object.
+  void RecordMigratedSlot(Object* value, Address slot);
+
 #ifdef DEBUG
   friend class MarkObjectVisitor;
   static void VisitObject(HeapObject* obj);