Reland [heap] Avoid the use of cells to point from code to new-space objects.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index aeded64a892aee49504144471c4f6ede80dafd22..5ce88feb3bc9bbacc630664d1a48212ddfe28117 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -2463,9 +2463,8 @@ Object** ArrayList::Slot(int index) {
   return data_start() + kFirstIndex + index;
 }
 
-
-void ArrayList::Set(int index, Object* obj) {
-  FixedArray::cast(this)->set(kFirstIndex + index, obj);
+void ArrayList::Set(int index, Object* obj, WriteBarrierMode mode) {
+  FixedArray::cast(this)->set(kFirstIndex + index, obj, mode);
 }