Have VisitorHelper<> handle moving object registration.

third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h

Index: third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h
diff --git a/third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h b/third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h
index 390b32397baa7ab4a537702311d048924d087905..5394e53258a623e0165555ad65d61c936421ea00 100644
--- a/third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h
+++ b/third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h
@@ -86,21 +86,6 @@ class MarkingVisitorImpl {
   }
 #endif
 
-  inline void registerMovingObjectReference(MovableReference* slot) {
-    DCHECK(toDerived()->getMarkingMode() ==
-           VisitorMarkingMode::GlobalMarkingWithCompaction);
-    toDerived()->heap().registerMovingObjectReference(slot);
-  }
-
-  inline void registerMovingObjectCallback(MovableReference reference,
-                                           MovingObjectCallback callback,
-                                           void* callbackData) {
-    DCHECK(toDerived()->getMarkingMode() ==
-           VisitorMarkingMode::GlobalMarkingWithCompaction);
-    toDerived()->heap().registerMovingObjectCallback(reference, callback,
-                                                     callbackData);
-  }
-
   inline bool ensureMarked(const void* objectPointer) {
     if (!objectPointer)
       return false;