Update {virtual,override,final} to follow C++11 style.

components/history/core/browser/android/favicon_sql_handler.h

Index: components/history/core/browser/android/favicon_sql_handler.h
diff --git a/components/history/core/browser/android/favicon_sql_handler.h b/components/history/core/browser/android/favicon_sql_handler.h
index fbcd66d625ddba9e0cc495d11ea81a77b31c1be1..86a628c6c21a9e741f4adf363f05c9c6f1746645 100644
--- a/components/history/core/browser/android/favicon_sql_handler.h
+++ b/components/history/core/browser/android/favicon_sql_handler.h
@@ -15,13 +15,13 @@ class ThumbnailDatabase;
 class FaviconSQLHandler : public SQLHandler {
  public:
   explicit FaviconSQLHandler(ThumbnailDatabase* thumbnail_db);
-  virtual ~FaviconSQLHandler();
+  ~FaviconSQLHandler() override;
 
   // SQLHandler overrides:
-  virtual bool Update(const HistoryAndBookmarkRow& row,
-                      const TableIDRows& ids_set) override;
-  virtual bool Delete(const TableIDRows& ids_set) override;
-  virtual bool Insert(HistoryAndBookmarkRow* row) override;
+  bool Update(const HistoryAndBookmarkRow& row,
+              const TableIDRows& ids_set) override;
+  bool Delete(const TableIDRows& ids_set) override;
+  bool Insert(HistoryAndBookmarkRow* row) override;
 
  private:
   // Deletes the given favicons if they are not used by any pages. Returns