Use ARRAYSIZE_UNSAFE to find the number of painters in shader_bench.

media/tools/shader_bench/shader_bench.cc

 // Copyright (c) 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 <stdio.h>
 #include <stdlib.h>
 #include <deque>
 #include <ostream>
 
 #include "base/at_exit.h"
@@ skipping 120 matching lines @@
   scoped_ptr<media::Window> window(new media::Window(width, height));
   gfx::GLSurface* surface =
       gfx::GLSurface::CreateViewGLSurface(window->PluginWindow()).get();
   gfx::GLContext* context = gfx::GLContext::CreateGLContext(
       NULL, surface, gfx::PreferDiscreteGpu).get();
   context->MakeCurrent(surface);
   // This sets D3DPRESENT_INTERVAL_IMMEDIATE on Windows.
   context->SetSwapInterval(0);
 
   // Initialize and name GPU painters.
-  static const int kNumPainters = 3;
   static const struct {
     const char* name;
     GPUPainter* painter;
   } painters[] = {
     { "CPU CSC + GPU Render", new CPUColorPainter() },
     { "GPU CSC/Render", new GPUColorWithLuminancePainter() },
   };
 
   // Run GPU painter tests.
-  for (int i = 0; i < kNumPainters; i++) {
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(painters); i++) {
     scoped_ptr<GPUPainter> painter(painters[i].painter);
     painter->LoadFrames(&frames);
     painter->SetGLContext(surface, context);
     painter->Initialize(width, height);
     printf("Running %s tests...", painters[i].name);
     RunTest(window.get(), painter.get());
   }
 
   return 0;
 }