Web Animations: Remove legacy animations engine.

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 1600 matching lines @@
 
     ASSERT(oldStyle);
 
     InspectorInstrumentation::didRecalculateStyleForElement(this);
 
     if (localChange != NoChange)
         updateCallbackSelectors(oldStyle.get(), newStyle.get());
 
     if (RenderObject* renderer = this->renderer()) {
         if (localChange != NoChange || pseudoStyleCacheIsInvalid(oldStyle.get(), newStyle.get()) || shouldNotifyRendererWithIdenticalStyles()) {
-            renderer->setAnimatableStyle(newStyle.get());
+            renderer->setStyle(newStyle.get());
         } else {
             // Although no change occurred, we use the new style so that the cousin style sharing code won't get
             // fooled into believing this style is the same.
             // FIXME: We may be able to remove this hack, see discussion in
             // https://codereview.chromium.org/30453002/
             renderer->setStyleInternal(newStyle.get());
         }
     }
 
     if (styleChangeType() >= SubtreeStyleChange)
@@ skipping 1994 matching lines @@
     // Before doing so, we need to resolve issues in HTMLSelectElement::recalcListItems
     // and RenderMenuList::setText. See also https://bugs.webkit.org/show_bug.cgi?id=88405
     if (hasTagName(optionTag) || hasTagName(optgroupTag))
         return false;
     if (FullscreenElementStack::isActiveFullScreenElement(this))
         return false;
     return true;
 }
 
 } // namespace WebCore