Remove rendererIsNeeded.

sky/engine/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 771 matching lines @@
 String Element::nodeName() const
 {
     return m_tagName.localName();
 }
 
 const AtomicString Element::imageSourceURL() const
 {
     return getAttribute(HTMLNames::srcAttr);
 }
 
-bool Element::rendererIsNeeded(const RenderStyle& style)
-{
-    return style.display() != NONE;
-}
-
 RenderObject* Element::createRenderer(RenderStyle* style)
 {
     return RenderObject::createObject(this, style);
 }
 
 Node::InsertionNotificationRequest Element::insertedInto(ContainerNode* insertionPoint)
 {
     // need to do superclass processing first so inDocument() is true
     // by the time we reach updateId
     ContainerNode::insertedInto(insertionPoint);
@@ skipping 1057 matching lines @@
         return false;
     // Turn off style sharing for elements that can gain layers for reasons outside of the style system.
     // See comments in RenderObject::setStyle().
     // FIXME: Why does gaining a layer from outside the style system require disabling sharing?
     if (isHTMLCanvasElement(*this))
         return false;
     return true;
 }
 
 } // namespace blink