[runtime] Fancify KeyAccumulator

src/elements.h

Index: src/elements.h
diff --git a/src/elements.h b/src/elements.h
index c238a7a2178b9b3753685ae97dac52f621e0d52a..12d46a14004e93b825831ce8a3fa821e69c0a4d3 100644
--- a/src/elements.h
+++ b/src/elements.h
@@ -102,7 +102,7 @@ class ElementsAccessor {
 
   virtual void AddElementsToKeyAccumulator(Handle<JSObject> receiver,
                                            KeyAccumulator* accumulator,
-                                           KeyFilter filter) = 0;
+                                           AddKeyConversion convert) = 0;
 
   // Returns a shared ElementsAccessor for the specified ElementsKind.
   static ElementsAccessor* ForKind(ElementsKind elements_kind) {
@@ -153,13 +153,14 @@ class ElementsAccessor {
   virtual Handle<Object> Shift(Handle<JSArray> receiver,
                                Handle<FixedArrayBase> backing_store) = 0;
 
+  virtual uint32_t GetCapacity(JSObject* holder,
+                               FixedArrayBase* backing_store) = 0;
+
  protected:
   friend class LookupIterator;
 
   static ElementsAccessor* ForArray(FixedArrayBase* array);
 
-  virtual uint32_t GetCapacity(JSObject* holder,
-                               FixedArrayBase* backing_store) = 0;
 
   // Element handlers distinguish between entries and indices when they
   // manipulate elements. Entries refer to elements in terms of their location