Update charted to 0.4.8 and roll

packages/quiver/test/time/clock_test.dart

 // Copyright 2013 Google Inc. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the 'License');
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an 'AS IS' BASIS,
@@ skipping 25 matching lines @@
     });
 
     // This test may be flaky on certain systems. I ran it over 10 million
     // cycles on my machine without any failures, but that's no guarantee.
     test('should be close enough to system clock', () {
       // At 10ms the test doesn't seem to be flaky.
       var epsilon = 10;
       expect(
           new DateTime.now().difference(new Clock().now()).inMilliseconds.abs(),
           lessThan(epsilon));
-      expect(new DateTime.now().difference(const Clock().now()).inMilliseconds
-          .abs(), lessThan(epsilon));
+      expect(
+          new DateTime.now()
+              .difference(const Clock().now())
+              .inMilliseconds
+              .abs(),
+          lessThan(epsilon));
     });
 
     test('should return time provided by custom TimeFunction', () {
       var time = new DateTime(2013);
       var fixedClock = new Clock(() => time);
       expect(fixedClock.now(), new DateTime(2013));
 
       time = new DateTime(2014);
       expect(fixedClock.now(), new DateTime(2014));
     });
 
     test('should return fixed time', () {
       expect(new Clock.fixed(new DateTime(2013)).now(), new DateTime(2013));
     });
 
     test('should return time Duration ago', () {
-      expect(subject.agoBy(new Duration(days: 366)), new DateTime(2012));
+      expect(subject.agoBy(const Duration(days: 366)), new DateTime(2012));
     });
 
     test('should return time Duration from now', () {
-      expect(subject.fromNowBy(new Duration(days: 365)), new DateTime(2014));
+      expect(subject.fromNowBy(const Duration(days: 365)), new DateTime(2014));
     });
 
     test('should return time parts ago', () {
-      expect(subject.ago(
-          days: 1,
-          hours: 1,
-          minutes: 1,
-          seconds: 1,
-          milliseconds: 1,
-          microseconds: 1000), new DateTime(2012, 12, 30, 22, 58, 58, 998));
+      expect(
+          subject.ago(
+              days: 1,
+              hours: 1,
+              minutes: 1,
+              seconds: 1,
+              milliseconds: 1,
+              microseconds: 1000),
+          new DateTime(2012, 12, 30, 22, 58, 58, 998));
     });
 
     test('should return time parts from now', () {
-      expect(subject.fromNow(
-          days: 1,
-          hours: 1,
-          minutes: 1,
-          seconds: 1,
-          milliseconds: 1,
-          microseconds: 1000), new DateTime(2013, 1, 2, 1, 1, 1, 2));
+      expect(
+          subject.fromNow(
+              days: 1,
+              hours: 1,
+              minutes: 1,
+              seconds: 1,
+              milliseconds: 1,
+              microseconds: 1000),
+          new DateTime(2013, 1, 2, 1, 1, 1, 2));
     });
 
     test('should return time micros ago', () {
       expect(
           subject.microsAgo(1000), new DateTime(2012, 12, 31, 23, 59, 59, 999));
     });
 
     test('should return time micros from now', () {
       expect(subject.microsFromNow(1000), new DateTime(2013, 1, 1, 0, 0, 0, 1));
     });
@@ skipping 111 matching lines @@
       expectDate(subject.yearsFromNow(2), 2015, 1, 1);
       expectDate(subject.yearsFromNow(3), 2016, 1, 1);
       expectDate(subject.yearsFromNow(4), 2017, 1, 1);
       expectDate(subject.yearsFromNow(5), 2018, 1, 1);
       expectDate(subject.yearsFromNow(6), 2019, 1, 1);
       expectDate(subject.yearsFromNow(30), 2043, 1, 1);
       expectDate(subject.yearsFromNow(1000), 3013, 1, 1);
     });
   });
 }