Roll Observatory packages and add a roll script

packages/polymer/e2e_test/canonicalization/test/deploy_common.dart

+// Copyright (c) 2014, 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.
+
+/// Tests how canonicalization works when using the deployed app.
+library canonicalization.test.deploy_common;
+
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_config.dart';
+import 'package:polymer/polymer.dart';
+
+import 'package:canonicalization/a.dart' show a;
+import 'packages/canonicalization/b.dart' show b;
+import 'package:canonicalization/c.dart' show c;
+import 'package:canonicalization/d.dart' as d1 show d;
+import 'packages/canonicalization/d.dart' as d2 show d;
+
+main() {
+  initPolymer();
+  useHtmlConfiguration();
+
+  setUp(() => Polymer.onReady);
+
+  test('canonicalization', () {
+    expect(a, 1,
+        reason: 'deploy picks the "package:" url as the canonical url for '
+        'script tags.');
+
+    // We shouldn't be using 'packages/' above, so that's ok.
+    expect(b, 0,
+        reason: 'we pick the "package:" url as the canonical url for script '
+        'tags.');
+    expect(c, 2, reason: 'c was always imported with "package:" urls.');
+    expect(d1.d, 2, reason: 'both a and b are loaded using package: urls');
+    expect(d2.d, 0, reason: 'both a and b are loaded using package: urls');
+  });
+}