Standardize usage of virtual/override/final specifiers.

gpu/command_buffer/tests/gl_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 "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 GLTest : public testing::Test {
  protected:
-  virtual void SetUp() {
-    gl_.Initialize(GLManager::Options());
-  }
+  void SetUp() override { gl_.Initialize(GLManager::Options()); }
 
-  virtual void TearDown() {
-    gl_.Destroy();
-  }
+  void TearDown() override { gl_.Destroy(); }
 
   GLManager gl_;
 };
 
 // Test that GL is at least minimally working.
 TEST_F(GLTest, Basic) {
   glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
   glClear(GL_COLOR_BUFFER_BIT);
   uint8 expected[] = { 0, 255, 0, 255, };
   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected));
@@ skipping 68 matching lines @@
   EXPECT_STREQ(
       "Chromium",
       reinterpret_cast<const char*>(glGetString(GL_RENDERER)));
   EXPECT_STREQ(
       "Chromium",
       reinterpret_cast<const char*>(glGetString(GL_VENDOR)));
 }
 
 }  // namespace gpu