Fixing Indexed DB from latest Blink roll

sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart

 library dart.dom.indexed_db;
 
 import 'dart:async';
 import 'dart:html';
 import 'dart:html_common';
 import 'dart:typed_data';
 import 'dart:_js_helper' show Creates, Returns, JSName, Null;
 import 'dart:_foreign_helper' show JS;
 import 'dart:_interceptors' show Interceptor, JSExtendableArray;
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
@@ skipping 560 matching lines @@
       bool autoAdvance}) {
     var key_OR_range = null;
     if (key != null) {
       if (range != null) {
         throw new ArgumentError('Cannot specify both key and range.');
       }
       key_OR_range = key;
     } else {
       key_OR_range = range;
     }
-    var request = _openCursor(key_OR_range, direction);
+    var request;
+    if (direction == null) {
+      request = _openCursor(key_OR_range);
+    } else {
+      request = _openCursor(key_OR_range, direction);
+    }
     return ObjectStore._cursorStreamFromResult(request, autoAdvance);
   }
 
   /**
    * Creates a stream of cursors over the records in this object store.
    *
    * See also:
    *
    * * [ObjectStore.openCursor]
    */
   Stream<Cursor> openKeyCursor({key, KeyRange range, String direction,
       bool autoAdvance}) {
     var key_OR_range = null;
     if (key != null) {
       if (range != null) {
         throw new ArgumentError('Cannot specify both key and range.');
       }
       key_OR_range = key;
     } else {
       key_OR_range = range;
     }
-    var request = _openKeyCursor(key_OR_range, direction);
+    var request;
+    if (direction == null) {
+      request = _openKeyCursor(key_OR_range);
+    } else {
+      request = _openKeyCursor(key_OR_range, direction);
+    }
     return ObjectStore._cursorStreamFromResult(request, autoAdvance);
   }
 
   
   @DomName('IDBIndex.keyPath')
   @DocsEditable()
   @annotation_Creates_SerializedScriptValue
   final dynamic keyPath;
 
   @DomName('IDBIndex.multiEntry')
@@ skipping 33 matching lines @@
   @annotation_Creates_SerializedScriptValue
   @Creates('ObjectStore')
   Request _getKey(Object key) native;
 
   @JSName('openCursor')
   @DomName('IDBIndex.openCursor')
   @DocsEditable()
   @Returns('Request')
   @Creates('Request')
   @Creates('Cursor')
-  Request _openCursor(Object key, String direction) native;
+  Request _openCursor(Object key, [String direction]) native;
 
   @JSName('openKeyCursor')
   @DomName('IDBIndex.openKeyCursor')
   @DocsEditable()
   @Returns('Request')
   @Creates('Request')
   @Creates('Cursor')
-  Request _openKeyCursor(Object key, String direction) native;
+  Request _openKeyCursor(Object key, [String direction]) native;
 
 }
 // 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.
 
 
 @DomName('IDBKeyRange')
 @Unstable()
 class KeyRange extends Interceptor native "IDBKeyRange" {
@@ skipping 573 matching lines @@
 // 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.
 
 
 @DocsEditable()
 @DomName('IDBAny')
 @deprecated // nonstandard
 abstract class _IDBAny extends Interceptor native "IDBAny" {
 }