Update charted to 0.4.8 and roll

packages/async/lib/src/result/future.dart

Index: packages/async/lib/src/result/future.dart
diff --git a/packages/async/lib/src/result_future.dart b/packages/async/lib/src/result/future.dart
similarity index 75%
rename from packages/async/lib/src/result_future.dart
rename to packages/async/lib/src/result/future.dart
index 311e83fece833242de36dd3bfad4c473c8c3c929..749b101f0678210e1c5316d1cf0b405549741858 100644
--- a/packages/async/lib/src/result_future.dart
+++ b/packages/async/lib/src/result/future.dart
@@ -2,12 +2,10 @@
 // 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 async.result_future;
-
 import 'dart:async';
 
+import '../delegate/future.dart';
 import '../result.dart';
-import 'delegate/future.dart';
 
 /// A [Future] wrapper that provides synchronous access to the result of the
 /// wrapped [Future] once it's completed.
@@ -22,14 +20,14 @@ class ResultFuture<T> extends DelegatingFuture<T> {
   Result<T> _result;
 
   factory ResultFuture(Future<T> future) {
-    var resultFuture;
-    resultFuture = new ResultFuture._(Result.capture(future).then((result) {
+    ResultFuture<T> resultFuture;
+    resultFuture = new ResultFuture._(() async {
+      var result = await Result.capture(future);
       resultFuture._result = result;
-      return result.asFuture;
-    }));
+      return await result.asFuture;
+    }());
     return resultFuture;
   }
 
-  ResultFuture._(Future<T> future)
-      : super(future);
+  ResultFuture._(Future<T> future) : super(future);
 }