Implement minified MirrorSystem.getName.

dart/tests/lib/mirrors/get_symbol_name_no_such_method_test.dart

+// Copyright (c) 2013, 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.
+
+/// Test that MirrorSystem.getName works correctly on symbols returned from
+/// Invocation.memberName.  This is especially relevant when minifying.
+
+import 'dart:mirrors' show MirrorSystem;
+
+class Foo {
+  String noSuchMethod(Invocation invocation) {
+    return MirrorSystem.getName(invocation.memberName);
+  }
+}
+
+expect(expected, actual) {
+  if (expected != actual) {
+    throw 'Expected: "$expected", but got "$actual"';
+  }
+}
+
+main() {
+  var foo = new Foo();
+  expect('foo', foo.foo);
+  expect('foo', foo.foo());
+  expect('foo', foo.foo(null));
+  // TODO(ahe): Why does the following not work in dart2js/minified.
+  // expect('foo', foo.foo(null, null));
+  expect('foo', foo.foo(a: null, b: null));
+
+  expect('baz', foo.baz);
+  expect('baz', foo.baz());
+  expect('baz', foo.baz(null));
+  // TODO(ahe): Why does the following not work in dart2js/minified.
+  // expect('baz', foo.baz(null, null));
+  expect('baz', foo.baz(a: null, b: null));
+}