Standardize usage of virtual/override/final specifiers.

gpu/command_buffer/tests/gl_shared_resources_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/gl2ext.h>
 
 #include "base/logging.h"
 #include "gpu/command_buffer/tests/gl_manager.h"
 #include "gpu/command_buffer/tests/gl_test_utils.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gpu {
 
 class GLSharedResources : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     GLManager::Options options;
     options.bind_generates_resource = true;
     gl1_.Initialize(options);
     options.share_group_manager = &gl1_;
     gl2_.Initialize(options);
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     gl1_.Destroy();
     gl2_.Destroy();
   }
 
   GLManager gl1_;
   GLManager gl2_;
 };
 
 // Test that GL creating/deleting works across context.
 TEST_F(GLSharedResources, CreateDelete) {
   gl1_.MakeCurrent();
   GLuint tex = 0;
   glGenTextures(1, &tex);
   gl2_.MakeCurrent();
   glBindTexture(GL_TEXTURE_2D, tex);
   glDeleteTextures(1, &tex);
   gl1_.MakeCurrent();
   glBindTexture(GL_TEXTURE_2D,tex);
   GLTestHelper::CheckGLError("no errors", __LINE__);
   gl2_.MakeCurrent();
   GLTestHelper::CheckGLError("no errors", __LINE__);
 }
 
 }  // namespace gpu