Update the streams interfaces

runtime/bin/file.dart

 // Copyright (c) 2011, 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.
 
-interface FileInputStream extends InputStream factory _FileInputStream {
-  FileInputStream(File file);
-}
-
-interface FileOutputStream extends OutputStream factory _FileOutputStream {
-  FileOutputStream(File file);
-}
-
 interface File factory _File {
   // Open a file.
   File(String name, bool writable);
 
   // Close the file.
   void close();
 
   // Synchronously read a single byte from the file.
   // TODO(jrgfogh): Remove this call.
   int readByte();
@@ skipping 38 matching lines @@
 
 class FileIOException implements Exception {
   const FileIOException([String this.message = ""]);
   String toString() => "FileIOException: $message";
 
   /*
    * Contains the exception message.
    */
   final String message;
 }