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

Source/core/dom/shadow/InsertionPoint.cpp

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 33 matching lines @@
 InsertionPoint::InsertionPoint(const QualifiedName& tagName, Document* document)
     : HTMLElement(tagName, document, CreateInsertionPoint)
     , m_registeredWithShadowRoot(false)
 {
 }
 
 InsertionPoint::~InsertionPoint()
 {
 }
 
-void InsertionPoint::attach()
+void InsertionPoint::attach(const AttachContext& context)
 {
     if (ShadowRoot* shadowRoot = containingShadowRoot())
         ContentDistributor::ensureDistribution(shadowRoot);
     for (size_t i = 0; i < m_distribution.size(); ++i) {
         if (!m_distribution.at(i)->attached())
-            m_distribution.at(i)->attach();
+            m_distribution.at(i)->attach(context);
     }
 
-    HTMLElement::attach();
+    HTMLElement::attach(context);
 }
 
-void InsertionPoint::detach()
+void InsertionPoint::detach(const AttachContext& context)
 {
     if (ShadowRoot* shadowRoot = containingShadowRoot())
         ContentDistributor::ensureDistribution(shadowRoot);
 
     for (size_t i = 0; i < m_distribution.size(); ++i)
-        m_distribution.at(i)->detach();
+        m_distribution.at(i)->detach(context);
 
-    HTMLElement::detach();
+    HTMLElement::detach(context);
 }
 
 bool InsertionPoint::shouldUseFallbackElements() const
 {
     return isActive() && !hasDistribution();
 }
 
 bool InsertionPoint::isShadowBoundary() const
 {
     return treeScope()->rootNode()->isShadowRoot() && isActive();
@@ skipping 162 matching lines @@
                 current = insertedTo;
                 results.append(insertedTo);
                 continue;
             }
         }
         return;
     }
 }
 
 } // namespace WebCore