Removed Polymer from Observatory deps

packages/polymer/test/entered_view_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.
-
-library polymer.test.entered_view_test;
-
-import 'dart:async';
-import 'dart:html';
-import 'package:polymer/polymer.dart';
-import 'package:unittest/unittest.dart';
-import 'package:unittest/html_config.dart';
-
-@reflectable
-class XOuter extends PolymerElement {
-  @observable bool expand = false;
-
-  XOuter.created() : super.created();
-}
-
-@reflectable
-class XInner extends PolymerElement {
-  int enteredCount = 0;
-
-  XInner.created() : super.created();
-
-  attached() {
-    enteredCount++;
-    super.attached();
-  }
-}
-
-main() => initPolymer().then((zone) => zone.run(() {
-  useHtmlConfiguration();
-  Polymer.register('x-inner', XInner);
-  Polymer.register('x-outer', XOuter);
-
-  setUp(() => Polymer.onReady);
-
-  test('element created properly', () {
-    XOuter outer = querySelector('x-outer');
-    outer.expand = true;
-    return outer.onMutation(outer.shadowRoot).then((_) {
-      // Element upgrade is also using mutation observers. Wait another tick so
-      // it goes before we do.
-      return new Future(() {
-        XInner inner = outer.shadowRoot.querySelector('x-inner');
-        expect(inner.enteredCount, 1, reason: 'attached should be called');
-      });
-    });
-  });
-}));