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

Source/core/dom/ContainerNode.h

Index: Source/core/dom/ContainerNode.h
diff --git a/Source/core/dom/ContainerNode.h b/Source/core/dom/ContainerNode.h
index b5409b4d56e3fa0ba9a335654355c6efe6d0074f..2e14f1824cab45513cd53947a7074b1ffe5045f8 100644
--- a/Source/core/dom/ContainerNode.h
+++ b/Source/core/dom/ContainerNode.h
@@ -114,8 +114,8 @@ public:
 
     void cloneChildNodes(ContainerNode* clone);
 
-    virtual void attach() OVERRIDE;
-    virtual void detach() OVERRIDE;
+    virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
+    virtual void detach(const AttachContext& = AttachContext()) OVERRIDE;
     virtual void setFocus(bool) OVERRIDE;
     virtual void setActive(bool active = true, bool pause = false) OVERRIDE;
     virtual void setHovered(bool = true) OVERRIDE;