Change new List(n) to return fixed length list.

sdk/lib/io/directory_impl.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.
 
 part of dart.io;
 
 class _Directory implements Directory {
   static const CREATE_REQUEST = 0;
   static const DELETE_REQUEST = 1;
   static const EXISTS_REQUEST = 2;
@@ skipping 13 matching lines @@
   external static _createTemp(String template);
   external static int _exists(String path);
   external static _create(String path);
   external static _delete(String path, bool recursive);
   external static _rename(String path, String newPath);
   external static List _list(String path, bool recursive);
   external static SendPort _newServicePort();
 
   Future<bool> exists() {
     _ensureDirectoryService();
-    List request = new List.fixedLength(2);
+    List request = new List(2);
     request[0] = EXISTS_REQUEST;
     request[1] = _path;
     return _directoryService.call(request).then((response) {
       if (_isErrorResponse(response)) {
         throw _exceptionOrErrorFromResponse(response, "Exists failed");
       }
       return response == 1;
     });
   }
 
@@ skipping 58 matching lines @@
         return new Future.immediate(this);
       } else {
         return future.then((_) => this);
       }
     });
   }
 
   Future<Directory> create({recursive: false}) {
     if (recursive) return createRecursively();
     _ensureDirectoryService();
-    List request = new List.fixedLength(2);
+    List request = new List(2);
     request[0] = CREATE_REQUEST;
     request[1] = _path;
     return _directoryService.call(request).then((response) {
       if (_isErrorResponse(response)) {
         throw _exceptionOrErrorFromResponse(response, "Creation failed");
       }
       return this;
     });
   }
 
@@ skipping 18 matching lines @@
     }
     if (recursive) return createRecursivelySync();
     var result = _create(_path);
     if (result is OSError) {
       throw new DirectoryIOException("Creation failed", _path, result);
     }
   }
 
   Future<Directory> createTemp() {
     _ensureDirectoryService();
-    List request = new List.fixedLength(2);
+    List request = new List(2);
     request[0] = CREATE_TEMP_REQUEST;
     request[1] = _path;
     return _directoryService.call(request).then((response) {
       if (_isErrorResponse(response)) {
         throw _exceptionOrErrorFromResponse(response,
                                       "Creation of temporary directory failed");
       }
       return new Directory(response);
     });
   }
 
   Directory createTempSync() {
     if (_path is !String) {
       throw new ArgumentError();
     }
     var result = _createTemp(path);
     if (result is OSError) {
       throw new DirectoryIOException("Creation of temporary directory failed",
                                      _path,
                                      result);
     }
     return new Directory(result);
   }
 
   Future<Directory> _deleteHelper(bool recursive, String errorMsg) {
   }
 
   Future<Directory> delete({recursive: false}) {
     _ensureDirectoryService();
-    List request = new List.fixedLength(3);
+    List request = new List(3);
     request[0] = DELETE_REQUEST;
     request[1] = _path;
     request[2] = recursive;
     return _directoryService.call(request).then((response) {
       if (_isErrorResponse(response)) {
         throw _exceptionOrErrorFromResponse(response, "Deletion failed");
       }
       return this;
     });
   }
 
   void deleteSync({recursive: false}) {
     if (_path is !String) {
       throw new ArgumentError();
     }
     var result = _delete(_path, recursive);
     if (result is OSError) {
       throw new DirectoryIOException("Deletion failed", _path, result);
     }
   }
 
   Future<Directory> rename(String newPath) {
     _ensureDirectoryService();
-    List request = new List.fixedLength(3);
+    List request = new List(3);
     request[0] = RENAME_REQUEST;
     request[1] = _path;
     request[2] = newPath;
     return _directoryService.call(request).then((response) {
       if (_isErrorResponse(response)) {
         throw _exceptionOrErrorFromResponse(response, "Rename failed");
       }
       return new Directory(newPath);
     });
   }
@@ skipping 101 matching lines @@
 
   void _ensureDirectoryService() {
     if (_directoryService == null) {
       _directoryService = _newServicePort();
     }
   }
 
   final String _path;
   SendPort _directoryService;
 }