Mechanical refactor to move ElementsKind type out of JSObject.

src/elements.h

Index: src/elements.h
diff --git a/src/elements.h b/src/elements.h
index 3eae303ed136b9a0879379e4a79393b32a545c55..851c8c3d97f89d7aab4f0e910ead6c4780b18b5e 100644
--- a/src/elements.h
+++ b/src/elements.h
@@ -54,8 +54,8 @@ class ElementsAccessor {
                                                Object* receiver) = 0;
 
   // Returns a shared ElementsAccessor for the specified ElementsKind.
-  static ElementsAccessor* ForKind(JSObject::ElementsKind elements_kind) {
-    ASSERT(elements_kind < JSObject::kElementsKindCount);
+  static ElementsAccessor* ForKind(ElementsKind elements_kind) {
+    ASSERT(elements_kind < kElementsKindCount);
     return elements_accessors_[elements_kind];
   }