[builtins] Sanitize the machinery around Construct calls.

src/code-factory.cc

Index: src/code-factory.cc
diff --git a/src/code-factory.cc b/src/code-factory.cc
index 9ebb077a08d9c45c9fddc48c055ba9d803fb2c13..0fbb36f6dbec8300dcba26b7c831562a4bc05045 100644
--- a/src/code-factory.cc
+++ b/src/code-factory.cc
@@ -305,6 +305,13 @@ Callable CodeFactory::CallFunction(Isolate* isolate, ConvertReceiverMode mode) {
 
 
 // static
+Callable CodeFactory::Construct(Isolate* isolate) {
+  return Callable(isolate->builtins()->Construct(),
+                  ConstructTrampolineDescriptor(isolate));
+}
+
+
+// static
 Callable CodeFactory::InterpreterPushArgsAndCall(Isolate* isolate) {
   return Callable(isolate->builtins()->InterpreterPushArgsAndCall(),
                   InterpreterPushArgsAndCallDescriptor(isolate));