fix(shims): function.name to return empty string when no name

modules/angular2/test/core/dom/shim_spec.dart

@@ -0,0 +1,5 @@
+library angular2.test.core.dom.shim_spec;
+
+main() {
+  // not relevant for dart.
+}

modules/angular2/test/core/dom/shim_spec.ts

@@ -0,0 +1,26 @@
+import {
+  AsyncTestCompleter,
+  beforeEach,
+  ddescribe,
+  describe,
+  el,
+  expect,
+  iit,
+  inject,
+  it,
+  xit
+} from 'angular2/test_lib';
+
+export function main() {
+  describe('Shim', () => {
+
+    it('should provide correct function.name ', () => {
+      var functionWithoutName = function(_) {};
+      function foo(_){};
+
+      expect((<any>functionWithoutName).name).toEqual('');
+      expect((<any>foo).name).toEqual('foo');
+    });
+
+  });
+}