:hover style not applied on hover if its display property is different from original style's

Source/core/html/shadow/ClearButtonElement.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 33 matching lines @@
 }
 
 PassRefPtr<ClearButtonElement> ClearButtonElement::create(Document* document, ClearButtonOwner& clearButtonOwner)
 {
     RefPtr<ClearButtonElement> element = adoptRef(new ClearButtonElement(document, clearButtonOwner));
     element->setPseudo(AtomicString("-webkit-clear-button", AtomicString::ConstructFromLiteral));
     element->setAttribute(idAttr, ShadowElementNames::clearButton());
     return element.release();
 }
 
-void ClearButtonElement::detach()
+void ClearButtonElement::detach(const AttachContext& context)
 {
     if (m_capturing) {
         if (Frame* frame = document()->frame())
             frame->eventHandler()->setCapturingMouseEventsNode(0);
     }
-    HTMLDivElement::detach();
+    HTMLDivElement::detach(context);
 }
 
 void ClearButtonElement::releaseCapture()
 {
     if (!m_capturing)
         return;
 
     if (Frame* frame = document()->frame()) {
         frame->eventHandler()->setCapturingMouseEventsNode(0);
         m_capturing = false;
@@ skipping 40 matching lines @@
     if (!event->defaultHandled())
         HTMLDivElement::defaultEventHandler(event);
 }
 
 bool ClearButtonElement::isClearButtonElement() const
 {
     return true;
 }
 
 }