Standardize usage of virtual/override/final specifiers.

gpu/config/gpu_control_list_number_info_unittest.cc

 // Copyright (c) 2013 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 "gpu/config/gpu_control_list.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gpu {
 
 class NumberInfoTest : public testing::Test {
  public:
   NumberInfoTest() { }
-  virtual ~NumberInfoTest() { }
+  ~NumberInfoTest() override {}
 
   typedef GpuControlList::FloatInfo FloatInfo;
   typedef GpuControlList::IntInfo IntInfo;
   typedef GpuControlList::BoolInfo BoolInfo;
 };
 
 TEST_F(NumberInfoTest, ValidFloatInfo) {
   const std::string op[] = {
     "=",
     "<",
@@ skipping 191 matching lines @@
   }
   {
     BoolInfo info(false);
     EXPECT_FALSE(info.Contains(true));
     EXPECT_TRUE(info.Contains(false));
   }
 }
 
 }  // namespace gpu