Standardize usage of virtual/override/final specifiers.

gpu/command_buffer/common/command_buffer_shared_test.cc

 // Copyright (c) 2012 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.
 
 // This file contains the tests for the CommandBufferSharedState class.
 
 #include "gpu/command_buffer/common/command_buffer_shared.h"
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gpu {
 
 class CommandBufferSharedTest : public testing::Test {
  protected:
-
-  virtual void SetUp() {
+  void SetUp() override {
     shared_state_.reset(new CommandBufferSharedState());
     shared_state_->Initialize();
   }
 
   scoped_ptr<CommandBufferSharedState> shared_state_;
 };
 
 TEST_F(CommandBufferSharedTest, TestBasic) {
   CommandBuffer::State state;
 
@@ skipping 58 matching lines @@
       EXPECT_EQ(state.error, state.get_offset + 2);
 
       if (state.get_offset == kSize)
         break;
     }
   }
 }
 
 }  // namespace gpu