Remove UnusedParam.h

Source/core/rendering/RenderLayer.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 75 matching lines @@
 #include "platform/geometry/FloatPoint3D.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/graphics/GraphicsContextStateSaver.h"
 #include "platform/graphics/filters/ReferenceFilter.h"
 #include "platform/graphics/filters/SourceGraphic.h"
 #include "platform/transforms/ScaleTransformOperation.h"
 #include "platform/transforms/TransformationMatrix.h"
 #include "platform/transforms/TranslateTransformOperation.h"
 #include "public/platform/Platform.h"
 #include "wtf/StdLibExtras.h"
-#include "wtf/UnusedParam.h"
 #include "wtf/text/CString.h"
 
 using namespace std;
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 RenderLayer::RenderLayer(RenderLayerModelObject* renderer)
     : m_hasSelfPaintingLayerDescendant(false)
@@ skipping 4063 matching lines @@
     }
 }
 
 void showLayerTree(const WebCore::RenderObject* renderer)
 {
     if (!renderer)
         return;
     showLayerTree(renderer->enclosingLayer());
 }
 #endif