Roll Observatory packages and add a roll script

packages/initialize/test/common.dart

Index: packages/initialize/test/common.dart
diff --git a/packages/initialize/test/common.dart b/packages/initialize/test/common.dart
new file mode 100644
index 0000000000000000000000000000000000000000..f121be5841a65b4be01914fa648a9a3a3f41a85c
--- /dev/null
+++ b/packages/initialize/test/common.dart
@@ -0,0 +1,51 @@
+// 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 initialize.test.build.common;
+
+import 'package:barback/barback.dart';
+import 'package:code_transformers/src/test_harness.dart';
+import 'package:unittest/unittest.dart';
+
+testPhases(String testName, List<List<Transformer>> phases,
+    Map<String, String> inputFiles, Map<String, String> expectedFiles,
+    [List<String> expectedMessages]) {
+  test(testName, () {
+    var helper = new TestHelper(phases, inputFiles, expectedMessages)..run();
+    return helper.checkAll(expectedFiles).whenComplete(() => helper.tearDown());
+  });
+}
+
+// Simple mock of initialize.
+const mockInitialize = '''
+    library initialize;
+
+    abstract class Initializer<T> {}
+
+    class _InitMethod implements Initializer<Function> {
+      const _InitMethod();
+    }
+    const _InitMethod initMethod = const _InitMethod();''';
+
+// Some simple initializers for use in tests.
+const commonInitializers = '''
+    library test_initializers;
+
+    import 'package:initialize/initialize.dart';
+
+    class _ConstInit extends Initializer<dynamic> {
+      const ConstInit();
+    }
+    const _ConstInit constInit = const _ConstInit();
+
+    class DynamicInit extends Initializer<dynamic> {
+      final dynamic _value;
+      const DynamicInit(this._value);
+    }
+
+    class NamedArgInit extends Initializer<dynamic> {
+      final dynamic _first;
+      final dynamic name;
+      const NamedArgInit(this._first, {this.name});
+    }
+    ''';