Implement the inert attribute

third_party/WebKit/Source/core/html/HTMLElement.idl

 /*
  * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 14 matching lines @@
     [CEReactions, Reflect] attribute DOMString title;
     [CEReactions, Reflect] attribute DOMString lang;
     [CEReactions] attribute boolean translate;
     [CEReactions] attribute DOMString dir;
     [SameObject, PerWorldBindings] readonly attribute DOMStringMap dataset;
 
     // user interaction
     [CEReactions, Reflect] attribute boolean hidden;
     void click();
     [CEReactions, CustomElementCallbacks] attribute long tabIndex;
+    [RuntimeEnabled=InertAttribute, Reflect] attribute boolean inert;

[kochi, 2017/05/22 07:31:15]

Can you add "CEReactions" extended attribute here as well as other
attributes? It will make sure changing inert attribute will trigger
custom elements reactions (if any callback is registered for
"inert" change").

FYI
https://html.spec.whatwg.org/multipage/scripting.html#cereactions

[aboxhall, 2017/05/23 02:45:43]

Done, thanks for the explanation!

     void focus();
     void blur();
     [CEReactions, Reflect] attribute DOMString accessKey;
     [CEReactions, CustomElementCallbacks] attribute boolean draggable;
     [CEReactions, RuntimeEnabled=ContextMenu] attribute HTMLMenuElement? contextMenu;
     [CEReactions] attribute boolean spellcheck;
 
     // HTMLElement implements ElementContentEditable
     // https://html.spec.whatwg.org/#contenteditable
     [CEReactions, CustomElementCallbacks, RaisesException=Setter] attribute DOMString contentEditable;
@@ skipping 12 matching lines @@
     // https://dev.w3.org/csswg/cssom/#the-elementcssinlinestyle-interface
     [SameObject, PerWorldBindings, PutForwards=cssText] readonly attribute CSSStyleDeclaration style;
 
     // Non-standard APIs
     [TreatNullAs=NullString, CEReactions, CustomElementCallbacks, RaisesException=Setter, MeasureAs=HTMLElementInnerText] attribute DOMString innerText;
     [TreatNullAs=NullString, CEReactions, CustomElementCallbacks, RaisesException=Setter, MeasureAs=HTMLElementOuterText] attribute DOMString outerText;
 };
 
 HTMLElement implements GlobalEventHandlers;
 HTMLElement implements NoncedElement;