Standardize usage of virtual/override/final specifiers.

components/history/core/browser/url_database_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 "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/path_service.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/history/core/browser/keyword_search_term.h"
@@ skipping 27 matching lines @@
  public:
   URLDatabaseTest() {
   }
 
  protected:
   // Provided for URL/VisitDatabase.
   sql::Connection& GetDB() override { return db_; }
 
  private:
   // Test setup.
-  virtual void SetUp() {
+  void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     base::FilePath db_file = temp_dir_.path().AppendASCII("URLTest.db");
 
     EXPECT_TRUE(db_.Open(db_file));
 
     // Initialize the tables for this test.
     CreateURLTable(false);
     CreateMainURLIndex();
     InitKeywordSearchTermsTable();
     CreateKeywordSearchTermsIndices();
   }
-  virtual void TearDown() {
-    db_.Close();
-  }
+  void TearDown() override { db_.Close(); }
 
   base::ScopedTempDir temp_dir_;
   sql::Connection db_;
 };
 
 // Test add, update, upsert, and query for the URL table in the HistoryDatabase.
 TEST_F(URLDatabaseTest, AddAndUpdateURL) {
   // First, add two URLs.
   const GURL url1("http://www.google.com/");
   URLRow url_info1(url1);
@@ skipping 252 matching lines @@
   ASSERT_EQ(1u, rows.size());
   EXPECT_EQ(keyword2, rows[0].term);
   EXPECT_EQ(url_id3, rows[0].url_id);
   rows.clear();
   // No row for keyword.
   ASSERT_TRUE(GetKeywordSearchTermRows(keyword, &rows));
   EXPECT_TRUE(rows.empty());
 }
 
 }  // namespace history