added bool type to named args in lib/io and lib/_internal

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 extends FileSystemEntity implements Directory {
   static const CREATE_REQUEST = 0;
   static const DELETE_REQUEST = 1;
   static const EXISTS_REQUEST = 2;
@@ skipping 107 matching lines @@
         }
       }
       if (future == null) {
         return new Future.value(this);
       } else {
         return future.then((_) => this);
       }
     });
   }
 
-  Future<Directory> create({recursive: false}) {
+  Future<Directory> create({bool recursive: false}) {
     if (recursive) return createRecursively();
     return _IOService.dispatch(_DIRECTORY_CREATE, [path]).then((response) {
       if (_isErrorResponse(response)) {
         throw _exceptionOrErrorFromResponse(response, "Creation failed");
       }
       return this;
     });
   }
 
   void createRecursivelySync() {
     var path = new _Path(this.path);
     var dirsToCreate = [];
     var terminator = path.isAbsolute ? '/' : '';
     while (path.toString() != terminator) {
       var dir = new Directory(path.toNativePath());
       if (dir.existsSync()) break;
       dirsToCreate.add(dir);
       path = path.directoryPath;
     }
     for (var i = dirsToCreate.length - 1; i >= 0; i--) {
       dirsToCreate[i].createSync();
     }
   }
 
-  void createSync({recursive: false}) {
+  void createSync({bool recursive: false}) {
     if (recursive) return createRecursivelySync();
     var result = _create(path);
     if (result is OSError) {
       throw new DirectoryException("Creation failed", path, result);
     }
   }
 
   Future<Directory> createTemp() {
     return _IOService.dispatch(_DIRECTORY_CREATE_TEMP, [path]).then((response) {
       if (_isErrorResponse(response)) {
         throw _exceptionOrErrorFromResponse(
             response, "Creation of temporary directory failed");
       }
       return new Directory(response);
     });
   }
 
   Directory createTempSync() {
     var result = _createTemp(path);
     if (result is OSError) {
       throw new DirectoryException("Creation of temporary directory failed",
                                    path,
                                    result);
     }
     return new Directory(result);
   }
 
-  Future<Directory> _delete({recursive: false}) {
+  Future<Directory> _delete({bool recursive: false}) {
     return _IOService.dispatch(_DIRECTORY_DELETE, [path, recursive])
         .then((response) {
           if (_isErrorResponse(response)) {
             throw _exceptionOrErrorFromResponse(response, "Deletion failed");
           }
           return this;
         });
   }
 
-  void _deleteSync({recursive: false}) {
+  void _deleteSync({bool recursive: false}) {
     var result = _deleteNative(path, recursive);
     if (result is OSError) {
       throw new DirectoryException("Deletion failed", path, result);
     }
   }
 
   Future<Directory> rename(String newPath) {
     return _IOService.dispatch(_DIRECTORY_RENAME, [path, newPath])
         .then((response) {
           if (_isErrorResponse(response)) {
@@ skipping 175 matching lines @@
       controller.addError(
           new DirectoryException("Directory listing failed",
                                  errorPath,
                                  err));
     } else {
       controller.addError(
           new DirectoryException("Internal error"));
     }
   }
 }