[turbofan] Model arguments object materialization in graph.

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index 67246688105471cbeebef112054246f0f99c0617..e1b7108a38624d148c5e304df218064645ad6bea 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -1179,6 +1179,11 @@ Bounds Typer::Visitor::TypeJSCreate(Node* node) {
 }
 
 
+Bounds Typer::Visitor::TypeJSCreateArguments(Node* node) {
+  return Bounds(Type::None(), Type::OtherObject());
+}
+
+
 Bounds Typer::Visitor::TypeJSCreateClosure(Node* node) {
   return Bounds(Type::None(), Type::OtherObject());
 }