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

Source/core/html/HTMLInputElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * 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
@@ skipping 169 matching lines @@
     int selectionEndForBinding(ExceptionCode&) const;
     String selectionDirectionForBinding(ExceptionCode&) const;
     void setSelectionStartForBinding(int, ExceptionCode&);
     void setSelectionEndForBinding(int, ExceptionCode&);
     void setSelectionDirectionForBinding(const String&, ExceptionCode&);
     void setSelectionRangeForBinding(int start, int end, ExceptionCode&);
     void setSelectionRangeForBinding(int start, int end, const String& direction, ExceptionCode&);
 
     virtual bool rendererIsNeeded(const NodeRenderingContext&);
     virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
-    virtual void detach();
+    virtual void detach(const AttachContext& = AttachContext()) OVERRIDE;
 
     // FIXME: For isActivatedSubmit and setActivatedSubmit, we should use the NVI-idiom here by making
     // it private virtual in all classes and expose a public method in HTMLFormControlElement to call
     // the private virtual method.
     virtual bool isActivatedSubmit() const;
     virtual void setActivatedSubmit(bool flag);
 
     String altText() const;
 
     int maxResults() const { return m_maxResults; }
@@ skipping 133 matching lines @@
 
     virtual void accessKeyAction(bool sendMouseEvents);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
     virtual void finishParsingChildren();
 
     virtual void copyNonAttributePropertiesFromElement(const Element&);
 
-    virtual void attach();
+    virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
 
     virtual bool appendFormData(FormDataList&, bool);
 
     virtual bool isSuccessfulSubmitButton() const;
 
     virtual void reset();
 
     virtual void* preDispatchEventHandler(Event*);
     virtual void postDispatchEventHandler(Event*, void* dataFromPreDispatch);
 
@@ skipping 76 matching lines @@
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(HTMLNames::inputTag));
     return static_cast<const HTMLInputElement*>(node);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toHTMLElement(const HTMLElement*);
 
 
 } //namespace
 #endif