[Interpreter] Add function literal support.

src/runtime/runtime-interpreter.cc

Index: src/runtime/runtime-interpreter.cc
diff --git a/src/runtime/runtime-interpreter.cc b/src/runtime/runtime-interpreter.cc
index 2caa2d5c9e4714183f1faa155a23367d75f5f229..96ebe5d4d3f48cfe77ab1239e8ef0c530a1a213d 100644
--- a/src/runtime/runtime-interpreter.cc
+++ b/src/runtime/runtime-interpreter.cc
@@ -137,5 +137,15 @@ RUNTIME_FUNCTION(Runtime_InterpreterTypeOf) {
 }
 
 
+RUNTIME_FUNCTION(Runtime_InterpreterNewClosure) {
+  HandleScope scope(isolate);
+  DCHECK_EQ(2, args.length());
+  CONVERT_ARG_HANDLE_CHECKED(SharedFunctionInfo, shared, 0);
+  CONVERT_SMI_ARG_CHECKED(pretenured_flag, 1);
+  Handle<Context> context(isolate->context(), isolate);
+  return *isolate->factory()->NewFunctionFromSharedFunctionInfo(
+      shared, context, static_cast<PretenureFlag>(pretenured_flag));
+}
+
 }  // namespace internal
 }  // namespace v8