Throw a TypeError when calling "next" method of a newly created generator with a value

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index eb5552e3ecb7423dc29553926c76ad233fc04954..4a5b6ea7bb167d60a2e9c51bbbb184883d4109a4 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -3138,6 +3138,16 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_ThrowGeneratorStateError) {
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_ThrowGeneratorStartError) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 0);
+  Vector< Handle<Object> > argv = HandleVector<Object>(NULL, 0);
+  Handle<Object> error =
+      isolate->factory()->NewTypeError("generator_start", argv);
+  return isolate->Throw(*error);
+}
+
+
 RUNTIME_FUNCTION(MaybeObject*, Runtime_ObjectFreeze) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);