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 bd34d56c5dd9fbcc153b4e7c72e11069abab58ec..336ae55574d9afa1410a81c9cba8ffa76a3e507c 100644
--- a/src/mark-compact.h
+++ b/src/mark-compact.h
@@ -902,6 +902,9 @@ 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);