Convert FastNewClosureStub into hydrogen.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index a9121ce851d578c650e45d2083bbbdd857bcb489..25dcfe9af4e1528409528d503607a13eb2fa59e0 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -7917,6 +7917,23 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_NewStrictArgumentsFast) {
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_NewClosureBailout) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(SharedFunctionInfo, shared, 0);
+  Handle<Context> context(isolate->context());
+
+  // The caller ensures that we pretenure closures that are assigned
+  // directly to properties.
+  PretenureFlag pretenure_flag = NOT_TENURED;
+  Handle<JSFunction> result =
+      isolate->factory()->NewFunctionFromSharedFunctionInfo(shared,
+                                                            context,
+                                                            pretenure_flag);
+  return *result;
+}
+
+
 RUNTIME_FUNCTION(MaybeObject*, Runtime_NewClosure) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 3);