cc: Convert non-const reference arguments to pointers.

cc/debug/overdraw_metrics.cc

 // Copyright 2012 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/debug/overdraw_metrics.h"
 
 #include "base/debug/trace_event.h"
 #include "base/metrics/histogram.h"
 #include "cc/base/math_util.h"
 #include "cc/trees/layer_tree_host.h"
@@ skipping 33 matching lines @@
 
 // Takes a given quad, maps it by the given transformation, and gives the area
 // of the resulting polygon.
 static inline float AreaOfMappedQuad(const gfx::Transform& transform,
                                      const gfx::QuadF& quad) {
   gfx::PointF clipped_quad[8];
   int num_vertices_in_clipped_quad = 0;
   MathUtil::MapClippedQuad(transform,
                            quad,
                            clipped_quad,
-                           num_vertices_in_clipped_quad);
+                           &num_vertices_in_clipped_quad);
   return PolygonArea(clipped_quad, num_vertices_in_clipped_quad);
 }
 
 void OverdrawMetrics::DidPaint(gfx::Rect painted_rect) {
   if (!record_metrics_for_frame_)
     return;
 
   pixels_painted_ +=
       static_cast<float>(painted_rect.width()) * painted_rect.height();
 }
@@ skipping 193 matching lines @@
                      contents_texture_use_bytes_,
                      "RenderSurfaceTextureBytes",
                      render_surface_texture_use_bytes_);
       }
       break;
     }
   }
 }
 
 }  // namespace cc