Pregenerate a RecordWrite stub that we need in the new CallFunctionStub

src/objects-inl.h

Index: src/objects-inl.h
===================================================================
--- src/objects-inl.h	(revision 9457)
+++ src/objects-inl.h	(working copy)
@@ -2935,6 +2935,19 @@
 }
 
 
+bool Code::is_pregenerated() {
+  return kind() == STUB && IsPregeneratedField::decode(flags());
+}
+
+
+void Code::set_is_pregenerated(bool value) {
+  ASSERT(kind() == STUB);
+  Flags f = flags();
+  f = static_cast<Flags>(IsPregeneratedField::update(f, value));
+  set_flags(f);
+}
+
+
 bool Code::optimizable() {
   ASSERT(kind() == FUNCTION);
   return READ_BYTE_FIELD(this, kOptimizableOffset) == 1;