cc: Remove CC*.h temporary includes, part 4/4.

cc/layer_sorter.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
 #include "CCLayerSorter.h"
 
-#include "CCMathUtil.h"
 #include "CCRenderSurface.h"
 #include "base/logging.h"
-#include <limits.h>
+#include "cc/math_util.h"
 #include <public/WebTransformationMatrix.h>
 #include <deque>
+#include <limits>
 #include <vector>
 
 using namespace std;
 using WebKit::WebTransformationMatrix;
 
 namespace cc {
 
 inline static float perpProduct(const FloatSize& u, const FloatSize& v)
 {
     return u.width() * v.height() - u.height() * v.width();
@@ skipping 377 matching lines @@
         *it = sortedList[count++]->layer;
 
     DVLOG(2) << "Sorting end ----";
 
     m_nodes.clear();
     m_edges.clear();
     m_activeEdges.clear();
 }
 
 }