Add a UseCounter for Document.getOverrideStyle()

Source/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 3926 matching lines @@
         addListenerType(ANIMATIONEND_LISTENER);
     } else if (eventType == EventTypeNames::webkitAnimationIteration || (RuntimeEnabledFeatures::cssAnimationUnprefixedEnabled() && eventType == EventTypeNames::animationiteration)) {
         addListenerType(ANIMATIONITERATION_LISTENER);
     } else if (eventType == EventTypeNames::webkitTransitionEnd || eventType == EventTypeNames::transitionend) {
         addListenerType(TRANSITIONEND_LISTENER);
     } else if (eventType == EventTypeNames::scroll) {
         addListenerType(SCROLL_LISTENER);
     }
 }
 
-CSSStyleDeclaration* Document::getOverrideStyle(Element*, const String&)
-{
-    return 0;
-}
-
 HTMLFrameOwnerElement* Document::ownerElement() const
 {
     if (!frame())
         return 0;
     // FIXME: This probably breaks the attempts to layout after a load is finished in implicitClose(), and probably tons of other things...
     return frame()->deprecatedLocalOwner();
 }
 
 bool Document::isInInvisibleSubframe() const
 {
@@ skipping 1866 matching lines @@
 #ifndef NDEBUG
 using namespace blink;
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (Document* document : set)
         fprintf(stderr, "- Document %p URL: %s\n", document, document->url().string().utf8().data());
 }
 #endif