Update charted to 0.4.8 and roll

packages/intl/test/number_closure_test.dart

 // 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.
 
-/**
- * Tests based on the closure number formatting tests.
- */
+/// Tests based on the closure number formatting tests.
 library number_closure_test;
 
 import 'dart:async';
 import "package:intl/intl.dart";
-import "package:unittest/unittest.dart";
+import "package:test/test.dart";
 
 main() {
   test("testVeryBigNumber", testVeryBigNumber);
   test("testStandardFormat", testStandardFormat);
   test("testNegativePercentage", testNegativePercentage);
   test("testCustomPercentage", testCustomPercentage);
   test("testBasicFormat", testBasicFormat);
   test("testGrouping", testGrouping);
   test("testPerMill", testPerMill);
   test("testQuotes", testQuotes);
   test("testZeros", testZeros);
   test("testExponential", testExponential);
   test("testPlusSignInExponentPart", testPlusSignInExponentPart);
   test("testApis", testApis);
   test("testLocaleSwitch", testLocaleSwitch);
   test("testLocaleSwitchAsync", testLocaleSwitchAsync);
 }
 
-/**
- * Test two large numbers for equality, assuming that there may be some
- * loss of precision in the less significant digits.
- */
+/// Test two large numbers for equality, assuming that there may be some
+/// loss of precision in the less significant digits.
 veryBigNumberCompare(str1, str2) {
   return str1.length == str2.length &&
       str1.substring(0, 8) == str2.substring(0, 8);
 }
 
 testVeryBigNumber() {
   var str;
   var fmt;
 
   fmt = new NumberFormat.decimalPattern();
@@ skipping 332 matching lines @@
 
   fmt = new NumberFormat('#,###');
   str = fmt.format(1234567890);
   expect('1,234,567,890', str);
 }
 
 testLocaleSwitch() {
   Intl.withLocale("fr", verifyFrenchLocale);
 }
 
+typedef void TimerArgument();
 testLocaleSwitchAsync() {
   Intl.withLocale("fr", () {
-    new Timer(new Duration(milliseconds: 10), expectAsync(verifyFrenchLocale));
+    new Timer(new Duration(milliseconds: 10),
+        expectAsync(verifyFrenchLocale) as TimerArgument);
   });
   // Verify that things running outside the zone still get en_US.
   testStandardFormat();
 }
 
 void verifyFrenchLocale() {
   var fmt = new NumberFormat('#,###');
   var str = fmt.format(1234567890);
   expect(str, '1\u00a0234\u00a0567\u00a0890');
 }