cc: Convert non-const reference arguments to pointers.

cc/trees/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 "cc/trees/layer_sorter.h"
 
 #include <algorithm>
 #include <deque>
 #include <limits>
 #include <vector>
@@ skipping 175 matching lines @@
                        const gfx::Transform& draw_transform) {
   gfx::QuadF layer_quad(gfx::RectF(0.f, 0.f, width, height));
 
   // Compute the projection of the layer quad onto the z = 0 plane.
 
   gfx::PointF clipped_quad[8];
   int num_vertices_in_clipped_quad;
   MathUtil::MapClippedQuad(draw_transform,
                            layer_quad,
                            clipped_quad,
-                           num_vertices_in_clipped_quad);
+                           &num_vertices_in_clipped_quad);
 
   if (num_vertices_in_clipped_quad < 3) {
     projected_bounds = gfx::RectF();
     return;
   }
 
   projected_bounds =
       MathUtil::ComputeEnclosingRectOfVertices(clipped_quad,
                                                num_vertices_in_clipped_quad);
 
@@ skipping 251 matching lines @@
     *it = sorted_list[count++]->layer;
 
   DVLOG(2) << "Sorting end ----";
 
   nodes_.clear();
   edges_.clear();
   active_edges_.clear();
 }
 
 }  // namespace cc