Roll Observatory packages and add a roll script

packages/charted/test.disabled/scale/scale_test.dart

Index: packages/charted/test.disabled/scale/scale_test.dart
diff --git a/packages/charted/test.disabled/scale/scale_test.dart b/packages/charted/test.disabled/scale/scale_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..29b71d1ffb3bbe02d2b19dc5c75889cb311b3df8
--- /dev/null
+++ b/packages/charted/test.disabled/scale/scale_test.dart
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Use of this source code is governed by a BSD-style
+ * license that can be found in the LICENSE file or at
+ * https://developers.google.com/open-source/licenses/bsd
+ */
+
+library charted.test.scale;
+
+import 'package:charted/core/utils.dart';
+import 'package:charted/interpolators/interpolators.dart';
+import 'package:charted/locale/locale.dart';
+import 'package:charted/scale/scale.dart';
+import 'package:unittest/unittest.dart';
+
+part 'linear_scale_test.dart';
+part 'log_scale_test.dart';
+part 'ordinal_scale_test.dart';
+part 'scale_util_test.dart';
+part 'time_scale_test.dart';
+
+scaleTests() {
+  testScaleUtil();
+  testLinearScale();
+  testLogScale();
+  testOrdinalScale();
+  testTimeScale();
+}