Added variable name as required by style guide.

gpu/demos/mip_map_2d/main.cc

 // Copyright (c) 2010 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.
 
 // This is a simple example that demonstrates generating a mipmap chain
 // and rendering with it.
 
 #include "gpu/demos/app_framework/application.h"
 #include "third_party/gles2_book/Chapter_9/MipMap2D/MipMap2D.h"
 
 namespace gpu_demos {
 class MipMap2D : public Application {
  public:
   MipMap2D();
   ~MipMap2D();
 
   bool Init();
 
  protected:
-  virtual void Draw(float);
+  virtual void Draw(float elapsed_sec);
 
  private:
   ESContext context_;
   MMUserData user_data_;
 
   DISALLOW_COPY_AND_ASSIGN(MipMap2D);
 };
 
 MipMap2D::MipMap2D() {
   esInitContext(&context_);
 
   memset(&user_data_, 0, sizeof(MMUserData));
   context_.userData = &user_data_;
 }
 
 MipMap2D::~MipMap2D() {
   mmShutDown(&context_);
 }
 
 bool MipMap2D::Init() {
   if (!Application::InitRenderContext()) return false;
 
   context_.width = width();
   context_.height = height();
   if (!mmInit(&context_)) return false;
 
   return true;
 }
 
-void MipMap2D::Draw(float) {
+void MipMap2D::Draw(float /*elapsed_sec*/) {
   mmDraw(&context_);
 }
 }  // namespace gpu_demos
 
 int main(int argc, char *argv[]) {
   gpu_demos::MipMap2D app;
   if (!app.Init()) {
     printf("Could not init.\n");
     return EXIT_FAILURE;
   }
 
   app.MainLoop();
   return EXIT_SUCCESS;
 }