Remove viewportDefiningElement.

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 1271 matching lines @@
     ASSERT(!m_isParsing);
     ASSERT(!firstChild());
     ASSERT(!m_focusedElement);
 
     m_parser = HTMLDocumentParser::create(toHTMLDocument(*this), false);
     setParsing(true);
     setReadyState(Loading);
     return m_parser.get();
 }
 
-Element* Document::viewportDefiningElement(RenderStyle* rootStyle) const
-{
-    // If a BODY element sets non-visible overflow, it is to be propagated to the viewport, as long
-    // as the following conditions are all met:
-    // (1) The root element is HTML.
-    // (2) It is the primary BODY element (we only assert for this, expecting callers to behave).
-    // (3) The root element has visible overflow.
-    // Otherwise it's the root element's properties that are to be propagated.
-    Element* rootElement = documentElement();
-    if (!rootElement)
-        return 0;
-    if (!rootStyle) {
-        rootStyle = rootElement->renderStyle();
-        if (!rootStyle)
-            return 0;
-    }
-    return rootElement;
-}
-
 void Document::implicitClose()
 {
     ASSERT(!inStyleRecalc());
 
     bool doload = !parsing() && m_parser && !processingLoadEvent();
 
     // If the load was blocked because of a pending location change and the location change triggers a same document
     // navigation, don't fire load events after the same document navigation completes (unless there's an explicit open).
     m_loadEventProgress = LoadEventTried;
 
@@ skipping 1310 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