[stubs] ToNumberStub --> ToNumber builtin.

src/code-factory.cc

Index: src/code-factory.cc
diff --git a/src/code-factory.cc b/src/code-factory.cc
index d2e075755d2853269cee2dfb0116e1c53b33d005..a2397437dba6370197eee217629425bfa741a52e 100644
--- a/src/code-factory.cc
+++ b/src/code-factory.cc
@@ -135,15 +135,15 @@ Callable CodeFactory::ToBoolean(Isolate* isolate) {
 
 // static
 Callable CodeFactory::ToNumber(Isolate* isolate) {
-  ToNumberStub stub(isolate);
-  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
+  return Callable(isolate->builtins()->ToNumber(),
+                  TypeConversionDescriptor(isolate));
 }
 
 
 // static
 Callable CodeFactory::NonNumberToNumber(Isolate* isolate) {
-  NonNumberToNumberStub stub(isolate);
-  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
+  return Callable(isolate->builtins()->NonNumberToNumber(),
+                  TypeConversionDescriptor(isolate));
 }
 
 // static