Revert of Simple BlinkGC heap compaction.

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

Index: third_party/WebKit/Source/platform/heap/HeapAllocator.h
diff --git a/third_party/WebKit/Source/platform/heap/HeapAllocator.h b/third_party/WebKit/Source/platform/heap/HeapAllocator.h
index 7d23b2cb0436195b7862bd7d53019fb0e06ad7e8..765113be0132ce3988d7ebc4de497b3f6628254c 100644
--- a/third_party/WebKit/Source/platform/heap/HeapAllocator.h
+++ b/third_party/WebKit/Source/platform/heap/HeapAllocator.h
@@ -187,20 +187,6 @@
     return visitor->weakTableRegistered(closure);
   }
 #endif
-
-  template <typename T, typename VisitorDispatcher>
-  static void registerBackingStoreReference(VisitorDispatcher visitor,
-                                            T** slot) {
-    visitor->registerBackingStoreReference(slot);
-  }
-
-  template <typename T, typename VisitorDispatcher>
-  static void registerBackingStoreCallback(VisitorDispatcher visitor,
-                                           T* backingStore,
-                                           MovingObjectCallback callback,
-                                           void* callbackData) {
-    visitor->registerBackingStoreCallback(backingStore, callback, callbackData);
-  }
 
   static void enterGCForbiddenScope() {
     ThreadState::current()->enterGCForbiddenScope();