Fixes all canonicalization problems... all of them. Ok, not all of them, but at

pkg/polymer/example/canonicalization/test/canonicalization_test.dart

Index: pkg/polymer/example/canonicalization/test/canonicalization_test.dart
diff --git a/pkg/polymer/example/canonicalization/test/canonicalization_test.dart b/pkg/polymer/example/canonicalization/test/canonicalization_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..a2c54c288811c9f87cb04b1686345dbd362c94be
--- /dev/null
+++ b/pkg/polymer/example/canonicalization/test/canonicalization_test.dart
@@ -0,0 +1,35 @@
+// 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.
+
+/** Tests how canonicalization works during development. */
+library canonicalization.dev_test;
+
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_config.dart';
+import 'package:polymer/polymer.dart';
+
+import 'package:canonicalization/a.dart';
+import 'packages/canonicalization/b.dart';
+import 'package:canonicalization/c.dart';
+import 'package:canonicalization/d.dart' as d1;
+import 'packages/canonicalization/d.dart' as d2;
+
+main() {
+  initPolymer();
+  useHtmlConfiguration();
+
+  setUp(() => Polymer.onReady);
+
+  test('canonicalization', () {
+    expect(a, 1, reason:
+      'initPolymer picks the "package:" url as the canonical url for script '
+      'tags whose library is also loaded with a "package:" url.');
+    expect(b, 1, reason:
+      'initPolymer does nothing with script tags where the program doesn\'t '
+      'use a "package:" urls matching the same library.');
+    expect(c, 2, reason: 'c was always imported with "package:" urls.');
+    expect(d1.d, 1, reason: 'this matches the import from a');
+    expect(d2.d, 1, reason: 'this matches the import from b');
+  });
+}