Update charted to 0.4.8 and roll

packages/matcher/lib/src/string_matchers.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.
 
-library matcher.string_matchers;
-
 import 'interfaces.dart';
 
 /// Returns a matcher which matches if the match argument is a string and
 /// is equal to [value] when compared case-insensitively.
 Matcher equalsIgnoringCase(String value) => new _IsEqualIgnoringCase(value);
 
 class _IsEqualIgnoringCase extends _StringMatcher {
   final String _value;
   final String _matchValue;
 
@@ skipping 43 matching lines @@
       description.addDescriptionOf(_matchValue).add(' ignoring whitespace');
 
   Description describeMismatch(
       item, Description mismatchDescription, Map matchState, bool verbose) {
     if (item is String) {
       return mismatchDescription
           .add('is ')
           .addDescriptionOf(collapseWhitespace(item))
           .add(' with whitespace compressed');
     } else {
-      return super.describeMismatch(
-          item, mismatchDescription, matchState, verbose);
+      return super
+          .describeMismatch(item, mismatchDescription, matchState, verbose);
     }
   }
 }
 
 /// Returns a matcher that matches if the match argument is a string and
 /// starts with [prefixString].
 Matcher startsWith(String prefixString) => new _StringStartsWith(prefixString);
 
 class _StringStartsWith extends _StringMatcher {
   final String _prefix;
@@ skipping 82 matching lines @@
 
 // String matchers match against a string. We add this intermediate
 // class to give better mismatch error messages than the base Matcher class.
 abstract class _StringMatcher extends Matcher {
   const _StringMatcher();
   Description describeMismatch(
       item, Description mismatchDescription, Map matchState, bool verbose) {
     if (!(item is String)) {
       return mismatchDescription.addDescriptionOf(item).add(' not a string');
     } else {
-      return super.describeMismatch(
-          item, mismatchDescription, matchState, verbose);
+      return super
+          .describeMismatch(item, mismatchDescription, matchState, verbose);
     }
   }
 }
 
 /// Utility function to collapse whitespace runs to single spaces
 /// and strip leading/trailing whitespace.
 String collapseWhitespace(String string) {
   var result = new StringBuffer();
   var skipSpace = true;
   for (var i = 0; i < string.length; i++) {
     var character = string[i];
     if (_isWhitespace(character)) {
       if (!skipSpace) {
         result.write(' ');
         skipSpace = true;
       }
     } else {
       result.write(character);
       skipSpace = false;
     }
   }
   return result.toString().trim();
 }
 
 bool _isWhitespace(String ch) =>
     ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t';