Standardize usage of virtual/override/final specifiers.

gpu/command_buffer/tests/gl_virtual_contexts_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"
 
 
 #define SHADER(Src) #Src
 
 namespace gpu {
 
 class GLVirtualContextsTest : public testing::Test {
  protected:
   static const int kSize0 = 4;
   static const int kSize1 = 8;
   static const int kSize2 = 16;
 
   static const GLfloat kFloatRed[4];
   static const GLfloat kFloatGreen[4];
   static const uint8 kExpectedRed[4];
   static const uint8 kExpectedGreen[4];
 
-  virtual void SetUp() {
+  void SetUp() override {
     GLManager::Options options;
     options.size = gfx::Size(kSize0, kSize0);
     gl_real_.Initialize(options);
     gl_real_shared_.Initialize(options);
     options.virtual_manager = &gl_real_shared_;
     options.size = gfx::Size(kSize1, kSize1);
     gl1_.Initialize(options);
     options.size = gfx::Size(kSize2, kSize2);
     gl2_.Initialize(options);
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     gl1_.Destroy();
     gl2_.Destroy();
     gl_real_shared_.Destroy();
     gl_real_.Destroy();
   }
 
   GLuint SetupColoredVertexProgram() {
     static const char* v_shader_str = SHADER(
         attribute vec4 a_position;
         attribute vec4 a_color;
@@ skipping 243 matching lines @@
   glDrawArrays(GL_TRIANGLES, 0, 6);
   EXPECT_TRUE(
       GLTestHelper::CheckPixels(0, 0, kSize2, kSize2, 0, kExpectedGreen));
   glFinish();
 
   GLTestHelper::CheckGLError("no errors", __LINE__);
 }
 
 }  // namespace gpu