Switch to standard integer types in gpu/.

gpu/tools/compositor_model_bench/forward_render_model.cc

 // Copyright (c) 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 "gpu/tools/compositor_model_bench/forward_render_model.h"
 
+#include <stddef.h>
+
 #include <cstdlib>
 #include <vector>
 
 #include "gpu/tools/compositor_model_bench/render_model_utils.h"
 
 using std::vector;
 
 class ForwardRenderNodeVisitor : public RenderNodeVisitor {
  public:
   ForwardRenderNodeVisitor() {}
@@ skipping 42 matching lines @@
   glClear(GL_COLOR_BUFFER_BIT);
   glColorMask(true, true, true, false);
   BeginFrame();
   root_->Accept(visitor_.get());
 }
 
 void ForwardRenderSimulator::Resize(int width, int height) {
   glViewport(0, 0, width, height);
 }