Remove Futures class, move methods to Future.

utils/archive/input_stream.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 input_stream;
 
 import 'archive.dart' as archive;
 import 'entry.dart';
 import 'read_request.dart';
 import 'utils.dart';
@@ skipping 57 matching lines @@
    * [onEntry].
    */
   Future<List<CompleteArchiveEntry>> readAll() {
     var completer = new Completer<List<Future<CompleteArchiveEntry>>>();
     var result = <Future<CompleteArchiveEntry>>[];
 
     this.onEntry = (entry) => result.add(entry.readAll());
     this.onError = (e, stack) => completer.completeError(e, stack);
     this.onClosed = () => completer.complete(result);
 
-    return completer.future.then(Futures.wait);
+    return completer.future.then(Future.wait);
   }
 
   /**
    * Sets a callback to call when a new entry is read from the archive.
    *
    * The [ArchiveEntry] that's read from an archive initially only contains
    * header information such as the filename and permissions. To get the actual
    * data contained in the entry, use [ArchiveEntry.openInputStream].
    *
    * Since the entries are read in sequence from the archive, the data stream
@@ skipping 64 matching lines @@
     }).then((_) {
       if (entry.isInputOpen) return entry.inputComplete;
       return new Future.immediate(null);
     }).whenComplete(() {
       _currentEntry = null;
       entry.close();
     });
     return future;
   }
 }