Update charted to 0.4.8 and roll

packages/csslib/test/testing.dart

 // Copyright (c) 2012, 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.
 
 /** Common definitions used for setting up the test environment. */
 library testing;
 
 import 'package:csslib/parser.dart';
 import 'package:csslib/visitor.dart';
 import 'package:csslib/src/messages.dart';
@@ skipping 12 matching lines @@
 
 const options = const PreprocessorOptions(
     useColors: false, warningsAsErrors: true, inputFile: 'memory');
 
 /**
  * Spin-up CSS parser in checked mode to detect any problematic CSS.  Normally,
  * CSS will allow any property/value pairs regardless of validity; all of our
  * tests (by default) will ensure that the CSS is really valid.
  */
 StyleSheet parseCss(String cssInput,
-    {List<Message> errors, PreprocessorOptions opts}) => parse(cssInput,
+        {List<Message> errors, PreprocessorOptions opts}) =>
+    parse(cssInput,
         errors: errors,
-        options: opts == null
-            ? simpleOptionsWithCheckedAndWarningsAsErrors
-            : opts);
+        options:
+            opts == null ? simpleOptionsWithCheckedAndWarningsAsErrors : opts);
 
 /**
  * Spin-up CSS parser in checked mode to detect any problematic CSS.  Normally,
  * CSS will allow any property/value pairs regardless of validity; all of our
  * tests (by default) will ensure that the CSS is really valid.
  */
-StyleSheet compileCss(String cssInput, {List<Message> errors,
-    PreprocessorOptions opts, bool polyfill: false,
-    List<StyleSheet> includes: null}) => compile(cssInput,
+StyleSheet compileCss(String cssInput,
+        {List<Message> errors,
+        PreprocessorOptions opts,
+        bool polyfill: false,
+        List<StyleSheet> includes: null}) =>
+    compile(cssInput,
         errors: errors,
-        options: opts == null
-            ? simpleOptionsWithCheckedAndWarningsAsErrors
-            : opts,
+        options:
+            opts == null ? simpleOptionsWithCheckedAndWarningsAsErrors : opts,
         polyfill: polyfill,
         includes: includes);
 
 StyleSheet polyFillCompileCss(input,
         {List<Message> errors, PreprocessorOptions opts}) =>
     compileCss(input, errors: errors, polyfill: true, opts: opts);
 
 /** CSS emitter walks the style sheet tree and emits readable CSS. */
 final _emitCss = new CssPrinter();
 
@@ skipping 16 matching lines @@
   walkTree(ss);
   return (_emitCss..visitTree(ss, pretty: false)).toString();
 }
 
 /** Walks the style sheet tree does nothing; insures the basic walker works. */
 void walkTree(StyleSheet ss) {
   _cssVisitor..visitTree(ss);
 }
 
 String dumpTree(StyleSheet ss) => treeToDebugString(ss);