Update charted to 0.4.8 and roll

packages/intl/test/message_extraction/embedded_plural_text_before_test.dart

-// 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.
-
-library embedded_plural_text_before_test;
-
-import "failed_extraction_test.dart";
-import "package:unittest/unittest.dart";
-
-main() {
-  test("Expect failure because of embedded plural with text before it", () {
-    var files = ['embedded_plural_text_before.dart'];
-    runTestWithWarnings(
-        warningsAreErrors: true,
-        expectedExitCode: 1,
-        embeddedPlurals: false,
-        sourceFiles: files);
-  });
-}