Add a few more known non-null cases

test/codegen/expect/methods.js

Index: test/codegen/expect/methods.js
diff --git a/test/codegen/expect/methods.js b/test/codegen/expect/methods.js
index 836d8fcd58f54b3b3751ad5cf677edad98bf57fe..4f429dfc4d698fea90ff8ad3bf86b4a27c724f9d 100644
--- a/test/codegen/expect/methods.js
+++ b/test/codegen/expect/methods.js
@@ -83,8 +83,8 @@ dart_library.library('methods', null, /* Imports */[
     let g = dart.bind(a, 'x');
     let aa = new A();
     let h = dart.dload(aa, 'x');
-    let ts = dart.fn(dart.toString.bind(a), core.String, []);
-    let nsm = dart.fn(dart.noSuchMethod.bind(a), dart.dynamic, [core.Invocation]);
+    let ts = dart.bind(a, 'toString');
+    let nsm = dart.bind(a, 'noSuchMethod');
     let c = dart.bind("", dartx.padLeft);
     let r = dart.bind(3.0, dartx.floor);
   }