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

Source/core/html/shadow/SpinButtonElement.cpp

 /*
  * Copyright (C) 2006, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 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
@@ skipping 43 matching lines @@
 }
 
 PassRefPtr<SpinButtonElement> SpinButtonElement::create(Document* document, SpinButtonOwner& spinButtonOwner)
 {
     RefPtr<SpinButtonElement> element = adoptRef(new SpinButtonElement(document, spinButtonOwner));
     element->setPseudo(AtomicString("-webkit-inner-spin-button", AtomicString::ConstructFromLiteral));
     element->setAttribute(idAttr, ShadowElementNames::spinButton());
     return element.release();
 }
 
-void SpinButtonElement::detach()
+void SpinButtonElement::detach(const AttachContext& context)
 {
     releaseCapture();
-    HTMLDivElement::detach();
+    HTMLDivElement::detach(context);
 }
 
 void SpinButtonElement::defaultEventHandler(Event* event)
 {
     if (!event->isMouseEvent()) {
         if (!event->defaultHandled())
             HTMLDivElement::defaultEventHandler(event);
         return;
     }
 
@@ skipping 171 matching lines @@
         m_upDownState = Indeterminate;
     HTMLDivElement::setHovered(flag);
 }
 
 bool SpinButtonElement::shouldRespondToMouseEvents()
 {
     return !m_spinButtonOwner || m_spinButtonOwner->shouldSpinButtonRespondToMouseEvents();
 }
 
 }