Update charted to 0.4.8 and roll

packages/observe/.status

Index: packages/observe/.status
diff --git a/packages/observe/.status b/packages/observe/.status
deleted file mode 100644
index 89620eb92b94be0266a6c7aade4924f68c8a287a..0000000000000000000000000000000000000000
--- a/packages/observe/.status
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright (c) 2014, 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.
-
-# Don't run any test-like files that show up in packages directories. It
-# shouldn't be necessary to run "pub install" in these packages, but if you do
-# it shouldn't break the tests.
-*/packages/*/*: Skip
-*/*/packages/*/*: Skip
-*/*/*/packages/*/*: Skip
-*/*/*/*/packages/*/*: Skip
-*/*/*/*/*/packages/*/*: Skip
-
-# (dartium, dart, d8, jsshell, etc)
-[ $browser || $compiler == dart2js ]
-test/unique_message_test: Skip
-build/test/unique_message_test: Skip
-test/transformer_test: Skip
-build/test/transformer_test: Skip
-
-[ $ie ]
-test/list_path_observer_test: RuntimeError, Pass # dartbug.com/20849
-
-[ $compiler == dart2js ]
-test/*: Skip  # raw tests only meant to be run in dartium. Other browsers run
-              # the output of pub-build