Remove Futures class, move methods to Future.

utils/pub/io.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.
 
 /// Helper functionality to make working with IO easier.
 library io;
 
 import 'dart:async';
 import 'dart:io';
 import 'dart:isolate';
@@ skipping 41 matching lines @@
 }
 
 /// Returns the path to [target] from [base].
 String relativeTo(target, base) => path.relative(target, from: base);
 
 /// Asynchronously determines if [path], which can be a [String] file path, a
 /// [File], or a [Directory] exists on the file system. Returns a [Future] that
 /// completes with the result.
 Future<bool> exists(path) {
   path = _getPath(path);
-  return Futures.wait([fileExists(path), dirExists(path)]).then((results) {
+  return Future.wait([fileExists(path), dirExists(path)]).then((results) {
     return results[0] || results[1];
   });
 }
 
 /// Asynchronously determines if [file], which can be a [String] file path or a
 /// [File], exists on the file system. Returns a [Future] that completes with
 /// the result.
 Future<bool> fileExists(file) {
   var path = _getPath(file);
   return log.ioAsync("Seeing if file $path exists.",
@@ skipping 204 matching lines @@
       if (recursive) {
         children.add(doList(new Directory(file), listedDirectories));
       }
     };
     lister.onFile = (file) {
       if (!includeHiddenFiles && basename(file).startsWith('.')) return;
       contents.add(join(dir, basename(file)));
     };
 
     return completer.future.then((contents) {
-      return Futures.wait(children).then((childContents) {
+      return Future.wait(children).then((childContents) {
         contents.addAll(flatten(childContents));
         return contents;
       });
     });
   }
 
   return doList(_getDirectory(dir), new Set<String>());
 }
 
 /// Asynchronously determines if [dir], which can be a [String] directory path
@@ skipping 730 matching lines @@
 Directory _getDirectory(entry) {
   if (entry is Directory) return entry;
   return new Directory(entry);
 }
 
 /// Gets a [Uri] for [uri], which can either already be one, or be a [String].
 Uri _getUri(uri) {
   if (uri is Uri) return uri;
   return new Uri.fromString(uri);
 }