Missed one template from the previous CL to unbreak indexed_db.

tools/dom/templates/html/impl/impl_IDBObjectStore.darttemplate

 // 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 $LIBRARYNAME;
 
 $(ANNOTATIONS)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
 
   @DomName('IDBObjectStore.add')
   Future add(value, [key]) {
@@ skipping 24 matching lines @@
     try {
       return _completeRequest(_delete(key_OR_keyRange));
     } catch (e, stacktrace) {
       return new Future.error(e, stacktrace);
     }
   }
 
   @DomName('IDBObjectStore.count')
   Future<int> count([key_OR_range]) {
    try {
-      var request;
-      if (key_OR_range != null) {
-        request = _count(key_OR_range);
-      } else {
-        request = _count();
-      }
+      var request = _count(key_OR_range);
       return _completeRequest(request);
     } catch (e, stacktrace) {
       return new Future.error(e, stacktrace);
     }
   }
 
   @DomName('IDBObjectStore.put')
   Future put(value, [key]) {
     try {
       var request;
@@ skipping 100 matching lines @@
       } else {
         controller.add(cursor);
         if (autoAdvance == true && controller.hasListener) {
           cursor.next();
         }
       }
     });
     return controller.stream;
   }
 }