Revert of Remove clearing of pending invalidation sets. (patchset #2 id:20001 of https://codereview…

third_party/WebKit/Source/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 1530 matching lines @@
     clearElementFlag(IsInCanvasSubtree);
 
     if (hasRareData()) {
         ElementRareData* data = elementRareData();
 
         data->clearRestyleFlags();
 
         if (ElementAnimations* elementAnimations = data->elementAnimations())
             elementAnimations->cssAnimations().cancel();
     }
-
-    document().styleEngine().styleInvalidator().clearInvalidation(*this);
 }
 
 void Element::attach(const AttachContext& context)
 {
     ASSERT(document().inStyleRecalc());
 
     // We've already been through detach when doing an attach, but we might
     // need to clear any state that's been added since then.
     if (hasRareData() && styleChangeType() == NeedsReattachStyleChange) {
         ElementRareData* data = elementRareData();
@@ skipping 66 matching lines @@
     ContainerNode::detach(context);
 
     if (!context.performingReattach && isUserActionElement()) {
         if (hovered())
             document().hoveredNodeDetached(*this);
         if (inActiveChain())
             document().activeChainNodeDetached(*this);
         document().userActionElements().didDetach(*this);
     }
 
+    document().styleEngine().styleInvalidator().clearInvalidation(*this);
+
     if (svgFilterNeedsLayerUpdate())
         document().unscheduleSVGFilterLayerUpdateHack(*this);
 
     ASSERT(needsAttach());
 }
 
 bool Element::pseudoStyleCacheIsInvalid(const ComputedStyle* currentStyle, ComputedStyle* newStyle)
 {
     ASSERT(currentStyle == computedStyle());
     ASSERT(layoutObject());
@@ skipping 1995 matching lines @@
 {
 #if ENABLE(OILPAN)
     if (hasRareData())
         visitor->trace(elementRareData());
     visitor->trace(m_elementData);
 #endif
     ContainerNode::trace(visitor);
 }
 
 } // namespace blink