Standardize usage of virtual/override/final specifiers in sql/.

sql/statement_unittest.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.
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "sql/connection.h"
 #include "sql/statement.h"
 #include "sql/test/error_callback_support.h"
 #include "sql/test/scoped_error_ignorer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/sqlite/sqlite3.h"
 
 namespace {
 
 class SQLStatementTest : public testing::Test {
  public:
-  virtual void SetUp() {
+  void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     ASSERT_TRUE(db_.Open(temp_dir_.path().AppendASCII("SQLStatementTest.db")));
   }
 
-  virtual void TearDown() {
-    db_.Close();
-  }
+  void TearDown() override { db_.Close(); }
 
   sql::Connection& db() { return db_; }
 
  private:
   base::ScopedTempDir temp_dir_;
   sql::Connection db_;
 };
 
 }  // namespace
 
@@ skipping 82 matching lines @@
 
   s.Reset(false);
   // Verify that we can get all rows again.
   ASSERT_TRUE(s.Step());
   EXPECT_EQ(12, s.ColumnInt(0));
   EXPECT_FALSE(s.Step());
 
   s.Reset(true);
   ASSERT_FALSE(s.Step());
 }