Standardize usage of virtual/override/final specifiers.

gpu/command_buffer/tests/gl_stream_draw_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 GLStreamDrawTest : public testing::Test {
  protected:
   static const int kSize = 4;
 
-  virtual void SetUp() {
+  void SetUp() override {
     GLManager::Options options;
     options.size = gfx::Size(kSize, kSize);
     gl_.Initialize(options);
   }
 
-  virtual void TearDown() {
-    gl_.Destroy();
-  }
+  void TearDown() override { gl_.Destroy(); }
 
   GLManager gl_;
 };
 
 namespace {
 
 GLuint SetupProgram() {
   static const char* v_shader_str = SHADER(
       attribute vec4 a_position;
       attribute vec4 a_color;
@@ skipping 110 matching lines @@
     glDrawArrays(GL_TRIANGLES, 0, 6);
     EXPECT_TRUE(
         GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_green));
   }
 
   GLTestHelper::CheckGLError("no errors", __LINE__);
 }
 
 }  // namespace gpu