Attach type info to extension method and object method tear-offs

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 12fad1d3a0db6376e5bb921b33b7819c4b349fab..52aae6fe9e2cca847c80286bda9c67d2ae9074a8 100644
--- a/test/codegen/expect/methods.js
+++ b/test/codegen/expect/methods.js
@@ -75,6 +75,10 @@ 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 c = dart.bind("", dartx.padLeft);
+    let r = dart.bind(3.0, dartx.floor);
   }
   dart.fn(test);
   // Exports: