Avoid leaking ThreadingPrimitives.h from StackStats.h when collection is off.

Source/core/rendering/RenderReplica.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 38 matching lines @@
     renderer->setDocumentForAnonymous(document);
     return renderer;
 }
 
 RenderReplica::~RenderReplica()
 {
 }
 
 void RenderReplica::layout()
 {
-    StackStats::LayoutCheckPoint layoutCheckPoint;
     setFrameRect(parentBox()->borderBoxRect());
     updateLayerTransform();
     clearNeedsLayout();
 }
 
 void RenderReplica::computePreferredLogicalWidths()
 {
     m_minPreferredLogicalWidth = parentBox()->width();
     m_maxPreferredLogicalWidth = m_minPreferredLogicalWidth;
     clearPreferredLogicalWidthsDirty();
@@ skipping 13 matching lines @@
         // computing using the wrong rootLayer
         RenderLayer* rootPaintingLayer = layer()->transform() ? layer()->parent() : layer()->enclosingTransformedAncestor();
         RenderLayer::LayerPaintingInfo paintingInfo(rootPaintingLayer, paintInfo.rect, PaintBehaviorNormal, LayoutSize(), 0, paintInfo.renderRegion);
         RenderLayer::PaintLayerFlags flags = RenderLayer::PaintLayerHaveTransparency | RenderLayer::PaintLayerAppliedTransform | RenderLayer::PaintLayerTemporaryClipRects | RenderLayer::PaintLayerPaintingReflection;
         layer()->parent()->paintLayer(paintInfo.context, paintingInfo, flags);
     } else if (paintInfo.phase == PaintPhaseMask)
         paintMask(paintInfo, adjustedPaintOffset);
 }
 
 } // namespace WebCore