Remove excessive include of ActiveAnimations.h

Source/core/rendering/RenderLayerBlendInfo.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 29 matching lines @@
  * If you do not delete the provisions above, a recipient may use your
  * version of this file under any of the LGPL, the MPL or the GPL.
  */
 
 #include "config.h"
 #include "core/rendering/RenderLayerBlendInfo.h"
 
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderLayerModelObject.h"
 #include "core/rendering/compositing/CompositedLayerMapping.h"
+#include "platform/RuntimeEnabledFeatures.h"
 
 namespace WebCore {
 
 RenderLayerBlendInfo::RenderLayerBlendInfo(RenderLayerModelObject& renderer)
     : m_renderer(renderer)
     , m_blendMode(blink::WebBlendModeNormal)
     , m_childLayerHasBlendMode(false)
     , m_childLayerHasBlendModeStatusDirty(false)
 {
 }
@@ skipping 45 matching lines @@
 
         layer->blendInfo().setChildLayerHasBlendMode(true);
         layer->blendInfo().setChildLayerHasBlendModeStatusDirty(false);
 
         if (layer->stackingNode()->isStackingContext())
             break;
     }
 }
 
 } // namespace WebCore