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

sql/connection_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 "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
 #include "sql/connection.h"
@@ skipping 72 matching lines @@
   }
   ~ScopedUmaskSetter() { umask(old_umask_); }
  private:
   mode_t old_umask_;
   DISALLOW_IMPLICIT_CONSTRUCTORS(ScopedUmaskSetter);
 };
 #endif
 
 class SQLConnectionTest : public testing::Test {
  public:
-  virtual void SetUp() {
+  void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     db_path_ = temp_dir_.path().AppendASCII("SQLConnectionTest.db");
     ASSERT_TRUE(db_.Open(db_path_));
   }
 
-  virtual void TearDown() {
-    db_.Close();
-  }
+  void TearDown() override { db_.Close(); }
 
   sql::Connection& db() { return db_; }
   const base::FilePath& db_path() { return db_path_; }
 
   // Handle errors by blowing away the database.
   void RazeErrorCallback(int expected_error, int error, sql::Statement* stmt) {
     EXPECT_EQ(expected_error, error);
     db_.RazeAndClose();
   }
 
@@ skipping 749 matching lines @@
     EXPECT_LT(1u, messages.size());
     EXPECT_NE(kOk, messages[0]);
     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
   }
 
   // TODO(shess): CorruptTableOrIndex could be used to produce a
   // file that would pass the quick check and fail the full check.
 }
 
 }  // namespace