Add interceptor support for symbols

src/elements.h

Index: src/elements.h
diff --git a/src/elements.h b/src/elements.h
index d0bddf982d7934cf7a18e08ed08e419a4e136595..bf3c7973b7e93494f34485b0a1f8863a57d9d7ed 100644
--- a/src/elements.h
+++ b/src/elements.h
@@ -169,14 +169,16 @@ class ElementsAccessor {
       Handle<Object> receiver,
       Handle<JSObject> holder,
       Handle<FixedArray> to,
-      Handle<FixedArrayBase> from) = 0;
+      Handle<FixedArrayBase> from,
+      FixedArray::KeyFilter filter) = 0;
 
   MUST_USE_RESULT inline MaybeHandle<FixedArray> AddElementsToFixedArray(
       Handle<Object> receiver,
       Handle<JSObject> holder,
-      Handle<FixedArray> to) {
+      Handle<FixedArray> to,
+      FixedArray::KeyFilter filter) {
     return AddElementsToFixedArray(
-        receiver, holder, to, handle(holder->elements()));
+        receiver, holder, to, handle(holder->elements()), filter);
   }
 
   // Returns a shared ElementsAccessor for the specified ElementsKind.