Roll Observatory packages and add a roll script

packages/initialize/test/initializer_test.dart

Index: packages/initialize/test/initializer_test.dart
diff --git a/packages/initialize/test/initializer_test.dart b/packages/initialize/test/initializer_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..1488b1d2d1906f26e4887ae4eb0e8e705c0b29b8
--- /dev/null
+++ b/packages/initialize/test/initializer_test.dart
@@ -0,0 +1,56 @@
+// Copyright (c) 2015, 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.
+@initializeTracker
+library initialize.initializer_test;
+
+import 'foo/bar.dart';
+import 'package:initialize/src/initialize_tracker.dart';
+import 'package:initialize/initialize.dart';
+import 'package:test_package/foo.dart';
+import 'package:unittest/unittest.dart';
+import 'package:unittest/compact_vm_config.dart';
+
+main() {
+  useCompactVMConfiguration();
+
+  // Run all initializers.
+  run().then((_) {
+    test('annotations are seen in post-order with superclasses first', () {
+      var expectedNames = [
+        const LibraryIdentifier(#initialize.test.foo, null, 'foo.dart'),
+        fooBar,
+        foo,
+        Foo,
+        const LibraryIdentifier(#initialize.test.foo.bar, null, 'foo/bar.dart'),
+        bar,
+        Bar,
+        const LibraryIdentifier(#test_package.bar, 'test_package', 'bar.dart'),
+        const LibraryIdentifier(#test_package.foo, 'test_package', 'foo.dart'),
+        const LibraryIdentifier(
+            #initialize.initializer_test, null, 'initializer_test.dart'),
+        zap,
+        Zoop, // Zap extends Zoop, so Zoop comes first.
+        Zap,
+      ];
+      expect(InitializeTracker.seen, expectedNames);
+    });
+
+    test('annotations only run once', () {
+      // Run the initializers again, should be a no-op.
+      var originalSize = InitializeTracker.seen.length;
+      return run().then((_) {
+        expect(InitializeTracker.seen.length, originalSize);
+      });
+    });
+  });
+}
+
+@initializeTracker
+class Zoop {}
+
+@initializeTracker
+class Zap extends Zoop {}
+
+@initializeTracker
+zap() {}