Update charted to 0.4.8 and roll

packages/petitparser/test/dart_file_tests.dart

-/// This test-case automatically generates various tests from Dart source
-/// code. Unfortunately the parser is currently unable to parse most of
-/// these files.
-library petitparser.test.dart_file_test;
-
-import 'dart:io';
-
-import 'package:test/test.dart';
-
-import 'package:petitparser/dart.dart';
-import 'package:petitparser/test.dart';
-
-void generateTests(DartGrammar dart, String title, List<FileSystemEntity> files) {
-  group(title, () {
-    files
-        .where((file) => file is File && file.path.endsWith('.dart'))
-        .forEach((File file) {
-          test(file.path, () {
-            var source = new StringBuffer();
-            file
-                .openRead()
-                .transform(SYSTEM_ENCODING.decoder)
-                .listen((part) => source.write(part), onDone: expectAsync(() {
-                  expect(source.toString(), accept(dart));
-                }), onError: fail);
-          });
-        });
-  });
-}
-
-void main() {
-  var dart = new DartGrammar();
-  generateTests(dart, 'Dart SDK', new Directory('packages')
-      .listSync(recursive: true, followLinks: false));
-  generateTests(dart, 'PetitParser', Directory.current
-      .listSync(recursive: true, followLinks: true));
-}