ES6 Map/Set iterators/forEach improvements

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index a63fd65d4bc6b2298a08bcdad7a62e160867ede8..2c0b93a9364276719232a396a2c9e9eec615c49c 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) {