Get rid of CompositingState.

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 823 matching lines @@
     if (hasRareData()) {
         ElementRareData* data = elementRareData();
 
         // attach() will perform the below steps for us when inside recalcStyle.
         if (!document().inStyleRecalc()) {
             data->clearComputedStyle();
         }
 
         if (ActiveAnimations* activeAnimations = data->activeAnimations()) {
             if (context.performingReattach) {
-                // FIXME: We call detach from within style recalc, so compositingState is not up to date.
-                // https://code.google.com/p/chromium/issues/detail?id=339847
-                DisableCompositingQueryAsserts disabler;
-
                 // FIXME: restart compositor animations rather than pull back to the main thread
                 activeAnimations->cancelAnimationOnCompositor();
             } else {
                 activeAnimations->cssAnimations().cancel();
                 activeAnimations->setAnimationStyleChange(false);
             }
         }
 
         if (ElementShadow* shadow = data->shadow())
             shadow->detach(context);
@@ skipping 939 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