Remove lots of dead virtuals from Element.

sky/engine/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 2852 matching lines @@
         // The oldActiveElement renderer is null, dropped on :active by setting display: none,
         // for instance. We still need to clear the ActiveChain as the mouse is released.
         for (Node* node = oldActiveElement; node; node = NodeRenderingTraversal::parent(node)) {
             ASSERT(!node->isTextNode());
             node->setActive(false);
             m_userActionElements.setInActiveChain(node, false);
         }
         setActiveHoverElement(nullptr);
     } else {
         Element* newActiveElement = innerElementInDocument;
-        if (!oldActiveElement && newActiveElement && !newActiveElement->isDisabledFormControl() && request.active() && !request.touchMove()) {
+        if (!oldActiveElement && newActiveElement && request.active() && !request.touchMove()) {
             // We are setting the :active chain and freezing it. If future moves happen, they
             // will need to reference this chain.
             for (Node* node = newActiveElement; node; node = NodeRenderingTraversal::parent(node)) {
                 ASSERT(!node->isTextNode());
                 m_userActionElements.setInActiveChain(node, true);
             }
             setActiveHoverElement(newActiveElement);
         }
     }
     // If the mouse has just been pressed, set :active on the chain. Those (and only those)
@@ skipping 245 matching lines @@
 using namespace blink;
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (WeakDocumentSet::const_iterator it = set.begin(); it != set.end(); ++it) {
         fprintf(stderr, "- Document %p URL: %s\n", *it, (*it)->url().string().utf8().data());
     }
 }
 #endif