Standardize usage of virtual/override/final specifiers.

gpu/command_buffer/tests/gl_gpu_memory_buffer_unittest.cc

 // Copyright 2014 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 <GLES2/gl2.h>
 #include <GLES2/gl2chromium.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 
 #include "base/bind.h"
@@ skipping 19 matching lines @@
 
 namespace gpu {
 namespace gles2 {
 
 static const int kImageWidth = 32;
 static const int kImageHeight = 32;
 static const int kImageBytesPerPixel = 4;
 
 class GpuMemoryBufferTest : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     gl_.Initialize(GLManager::Options());
     gl_.MakeCurrent();
 
     glGenTextures(2, texture_ids_);
     glBindTexture(GL_TEXTURE_2D, texture_ids_[1]);
 
     glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
     glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 
     glGenFramebuffers(1, &framebuffer_id_);
     glBindFramebuffer(GL_FRAMEBUFFER, framebuffer_id_);
     glFramebufferTexture2D(GL_FRAMEBUFFER,
                            GL_COLOR_ATTACHMENT0,
                            GL_TEXTURE_2D,
                            texture_ids_[1],
                            0);
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     glDeleteTextures(2, texture_ids_);
     glDeleteFramebuffers(1, &framebuffer_id_);
 
     gl_.Destroy();
   }
 
   GLManager gl_;
   GLuint texture_ids_[2];
   GLuint framebuffer_id_;
 };
@@ skipping 48 matching lines @@
 
   // Release the image.
   glReleaseTexImage2DCHROMIUM(GL_TEXTURE_2D, image_id);
 
   // Destroy the image.
   glDestroyImageCHROMIUM(image_id);
 }
 
 }  // namespace gles2
 }  // namespace gpu