Force inlining for _ElementCssClassSet.add() / .remove()

tools/dom/src/dart2js_CssClassSet.dart

 // Copyright (c) 2015, 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 html;
 
 /**
  * A set (union) of the CSS classes that are present in a set of elements.
  * Implemented separately from _ElementCssClassSet for performance.
  */
@@ skipping 122 matching lines @@
   }
 
   void retainWhere(bool test(String name)) {
     _removeWhere(_element, test, false);
   }
 
   static bool _contains(Element _element, Object value) {
     return value is String && _classListContains(_classListOf(_element), value);
   }
 
+  @ForceInline()
   static bool _add(Element _element, String value) {
     DomTokenList list = _classListOf(_element);
     // Compute returned result independently of action upon the set.
     bool added = !_classListContainsBeforeAddOrRemove(list, value);
     _classListAdd(list, value);
     return added;
   }
 
+  @ForceInline()
   static bool _remove(Element _element, String value) {
     DomTokenList list = _classListOf(_element);
     bool removed = _classListContainsBeforeAddOrRemove(list, value);
     _classListRemove(list, value);
     return removed;
   }
 
   static bool _toggle(Element _element, String value, bool shouldAdd) {
     // There is no value that can be passed as the second argument of
     // DomTokenList.toggle that behaves the same as passing one argument.
@@ skipping 88 matching lines @@
 
   static bool _classListToggle1(DomTokenList list, String value) {
     return JS('bool', '#.toggle(#)', list, value);
   }
 
   static bool _classListToggle2(
       DomTokenList list, String value, bool shouldAdd) {
     return JS('bool', '#.toggle(#, #)', list, value, shouldAdd);
   }
 }