Refresh dom_frog.

client/dom/generated/src/wrapping/_CSSStyleDeclarationWrappingImplementation.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.
 
 // WARNING: Do not edit - generated code.
 
 class _CSSStyleDeclarationWrappingImplementation extends DOMWrapperBase implements CSSStyleDeclaration {
   _CSSStyleDeclarationWrappingImplementation() : super() {}
 
   static create__CSSStyleDeclarationWrappingImplementation() native {
@@ skipping 41 matching lines @@
     return _item(this, index);
   }
   static String _item(receiver, index) native;
 
   String removeProperty(String propertyName) {
     return _removeProperty(this, propertyName);
   }
   static String _removeProperty(receiver, propertyName) native;
 
   void setProperty(String propertyName, String value, [String priority = null]) {
-    if (priority === null) {
-      _setProperty(this, propertyName, value);
-      return;
-    } else {
-      _setProperty_2(this, propertyName, value, priority);
-      return;
-    }
+    _setProperty(this, propertyName, value, priority);
+    return;
   }
-  static void _setProperty(receiver, propertyName, value) native;
-  static void _setProperty_2(receiver, propertyName, value, priority) native;
+  static void _setProperty(receiver, propertyName, value, priority) native;
 
   String get typeName() { return "CSSStyleDeclaration"; }
 }