Standardize usage of virtual/override/final in components/

components/search_engines/keyword_table.h

 // 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.
 
 #ifndef COMPONENTS_SEARCH_ENGINES_KEYWORD_TABLE_H_
 #define COMPONENTS_SEARCH_ENGINES_KEYWORD_TABLE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 74 matching lines @@
 
   typedef std::pair<OperationType, TemplateURLData> Operation;
   typedef std::vector<Operation> Operations;
   typedef std::vector<TemplateURLData> Keywords;
 
   // Constants exposed for the benefit of test code:
 
   static const char kDefaultSearchProviderKey[];
 
   KeywordTable();
-  virtual ~KeywordTable();
+  ~KeywordTable() override;
 
   // Retrieves the KeywordTable* owned by |database|.
   static KeywordTable* FromWebDatabase(WebDatabase* db);
 
-  virtual WebDatabaseTable::TypeKey GetTypeKey() const override;
-  virtual bool CreateTablesIfNecessary() override;
-  virtual bool IsSyncable() override;
-  virtual bool MigrateToVersion(int version,
-                                bool* update_compatible_version) override;
+  WebDatabaseTable::TypeKey GetTypeKey() const override;
+  bool CreateTablesIfNecessary() override;
+  bool IsSyncable() override;
+  bool MigrateToVersion(int version, bool* update_compatible_version) override;
 
   // Performs an arbitrary number of Add/Remove/Update operations as a single
   // transaction.  This is provided for efficiency reasons: if the caller needs
   // to perform a large number of operations, doing them in a single transaction
   // instead of one-per-transaction can be dramatically more efficient.
   bool PerformOperations(const Operations& operations);
 
   // Loads the keywords into the specified vector. It's up to the caller to
   // delete the returned objects.
   // Returns true on success.
@@ skipping 61 matching lines @@
                           std::string* result);
 
   // Migrates table |name| (which should be either "keywords" or
   // "keywords_backup") from version 44 to version 45.
   bool MigrateKeywordsTableForVersion45(const std::string& name);
 
   DISALLOW_COPY_AND_ASSIGN(KeywordTable);
 };
 
 #endif  // COMPONENTS_SEARCH_ENGINES_KEYWORD_TABLE_H_