Turn StyleSharing to 11.

sky/engine/core/css/resolver/StyleResolver.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 243 matching lines @@
 {
     return m_features.hasSelectorForId(id);
 }
 
 void StyleResolver::addToStyleSharingList(Element& element)
 {
     // Never add elements to the style sharing list if we're not in a recalcStyle,
     // otherwise we could leave stale pointers in there.
     if (!document().inStyleRecalc())
         return;
+    ASSERT(element.supportsStyleSharing());
     INCREMENT_STYLE_STATS_COUNTER(*this, sharedStyleCandidates);
     StyleSharingList& list = styleSharingList();
     if (list.size() >= styleSharingListSize)
         list.removeLast();
     list.prepend(&element);
 }
 
 StyleSharingList& StyleResolver::styleSharingList()
 {
     m_styleSharingLists.resize(styleSharingMaxDepth);
@@ skipping 663 matching lines @@
 bool StyleResolver::mediaQueryAffectedByViewportChange() const
 {
     for (unsigned i = 0; i < m_viewportDependentMediaQueryResults.size(); ++i) {
         if (m_medium->eval(m_viewportDependentMediaQueryResults[i]->expression()) != m_viewportDependentMediaQueryResults[i]->result())
             return true;
     }
     return false;
 }
 
 } // namespace blink