Non-JSArrays must always have holey elements.

src/ast.h

Index: src/ast.h
diff --git a/src/ast.h b/src/ast.h
index 03f43ad0a7aa4f8261c349da0244099e491bcf9d..fcab4c11337fe7f9b3a5e434bdb326f8f28c6de9 100644
--- a/src/ast.h
+++ b/src/ast.h
@@ -1868,7 +1868,6 @@ class CallNew FINAL : public Expression, public FeedbackSlotInterface {
   void RecordTypeFeedback(TypeFeedbackOracle* oracle);
   virtual bool IsMonomorphic() OVERRIDE { return is_monomorphic_; }
   Handle<JSFunction> target() const { return target_; }
-  ElementsKind elements_kind() const { return elements_kind_; }
   Handle<AllocationSite> allocation_site() const {
     return allocation_site_;
   }
@@ -1884,7 +1883,6 @@ class CallNew FINAL : public Expression, public FeedbackSlotInterface {
         expression_(expression),
         arguments_(arguments),
         is_monomorphic_(false),
-        elements_kind_(GetInitialFastElementsKind()),
         callnew_feedback_slot_(kInvalidFeedbackSlot),
         return_id_(id_gen->GetNextId()) {}
 
@@ -1894,7 +1892,6 @@ class CallNew FINAL : public Expression, public FeedbackSlotInterface {
 
   bool is_monomorphic_;
   Handle<JSFunction> target_;
-  ElementsKind elements_kind_;
   Handle<AllocationSite> allocation_site_;
   int callnew_feedback_slot_;