ES6 Map/Set iterators/forEach improvements

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index d07d1a176b4405be784905bf252130dd95911e13..ddcab13d557c6c5fc713756f410bc5962ee56699 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -1600,15 +1600,6 @@ RUNTIME_FUNCTION(Runtime_SetIteratorNext) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_SetIteratorClose) {
-  HandleScope scope(isolate);
-  ASSERT(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSSetIterator, holder, 0);
-  holder->Close();
-  return isolate->heap()->undefined_value();
-}
-
-
 RUNTIME_FUNCTION(Runtime_MapInitialize) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
@@ -1709,15 +1700,6 @@ RUNTIME_FUNCTION(Runtime_MapIteratorNext) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_MapIteratorClose) {
-  HandleScope scope(isolate);
-  ASSERT(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSMapIterator, holder, 0);
-  holder->Close();
-  return isolate->heap()->undefined_value();
-}
-
-
 static Handle<JSWeakCollection> WeakCollectionInitialize(
     Isolate* isolate,
     Handle<JSWeakCollection> weak_collection) {