Handlify JSObject::EnsureCanContainHeapObjectElements method.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index cd8426f08fa5fbe6d79ea99489bf4b3b8d9905ef..db0409f39ce1efdc212e8ef264a45dfb72496061 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -1353,17 +1353,16 @@ inline bool AllocationSite::CanTrack(InstanceType type) {
 }
 
 
-MaybeObject* JSObject::EnsureCanContainHeapObjectElements() {
-  ValidateElements();
-  ElementsKind elements_kind = map()->elements_kind();
+void JSObject::EnsureCanContainHeapObjectElements(Handle<JSObject> object) {
+  object->ValidateElements();
+  ElementsKind elements_kind = object->map()->elements_kind();
   if (!IsFastObjectElementsKind(elements_kind)) {
     if (IsFastHoleyElementsKind(elements_kind)) {
-      return TransitionElementsKind(FAST_HOLEY_ELEMENTS);
+      TransitionElementsKind(object, FAST_HOLEY_ELEMENTS);
     } else {
-      return TransitionElementsKind(FAST_ELEMENTS);
+      TransitionElementsKind(object, FAST_ELEMENTS);
     }
   }
-  return this;
 }