Fix runtimeType.toString for tear-offs.

tests/language/runtime_type2_test.dart

+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import "package:expect/expect.dart";
+
+class A {
+  foo() => 499;
+}
+
+bar() => 42;
+
+main() {
+  String runtimeStringFoo = new A().foo.runtimeType.toString();
+  String runtimeStringBar = bar.runtimeType.toString();
+  Expect.isTrue(
+      runtimeStringFoo != "" && runtimeStringFoo != "undefined");

[sra1, 2015/06/26 23:10:09]

Can this be strengthened to expect a short name or a specific long name?

[floitsch, 2015/07/01 17:00:15]

It's hard:
- the VM and dart2js disagree.
- after minification the name becomes unpredictable.

[sra1, 2015/07/01 17:12:59]

runtimeStringFoo.contains(vmstring) ||
runtimeStringFoo.contains(dart2jsString) ||
runtimeStringFoo.matches(regex for dart2js with 3 or fewer characters)

+  Expect.isTrue(
+      runtimeStringBar != "" && runtimeStringBar != "undefined");
+}