Roll Observatory packages and add a roll script

packages/polymer/e2e_test/canonicalization/test/dev1_test.dart

Index: packages/polymer/e2e_test/canonicalization/test/dev1_test.dart
diff --git a/dart_style/lib/dart_style.dart b/packages/polymer/e2e_test/canonicalization/test/dev1_test.dart
similarity index 63%
copy from dart_style/lib/dart_style.dart
copy to packages/polymer/e2e_test/canonicalization/test/dev1_test.dart
index 6ecc7c3f4a997b7e75c40354287aec41a9f823fb..e34c3c73448228445d41325754454765a42ab84d 100644
--- a/dart_style/lib/dart_style.dart
+++ b/packages/polymer/e2e_test/canonicalization/test/dev1_test.dart
@@ -2,8 +2,6 @@
 // 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 dart_style;
+library canonicalization.test.dev1_test;
 
-export 'src/dart_formatter.dart';
-export 'src/formatter_exception.dart';
-export 'src/source_code.dart';
+export 'dev_common.dart';