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

Source/core/html/HTMLProgressElement.cpp

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 72 matching lines @@
 void HTMLProgressElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
     if (name == valueAttr)
         didElementStateChange();
     else if (name == maxAttr)
         didElementStateChange();
     else
         LabelableElement::parseAttribute(name, value);
 }
 
-void HTMLProgressElement::attach()
+void HTMLProgressElement::attach(const AttachContext& context)
 {
-    LabelableElement::attach();
+    LabelableElement::attach(context);
     if (RenderProgress* render = renderProgress())
         render->updateFromElement();
 }
 
 double HTMLProgressElement::value() const
 {
     double value = parseToDoubleForNumberType(fastGetAttribute(valueAttr));
     return !std::isfinite(value) || value < 0 ? 0 : std::min(value, max());
 }
 
@@ skipping 59 matching lines @@
 
     inner->appendChild(bar, ASSERT_NO_EXCEPTION);
 }
 
 bool HTMLProgressElement::shouldAppearIndeterminate() const
 {
     return !isDeterminate();
 }
 
 } // namespace