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

sql/test/sql_test_suite.h

Index: sql/test/sql_test_suite.h
diff --git a/sql/test/sql_test_suite.h b/sql/test/sql_test_suite.h
index a9663fcc44a421a7e05ae373ad0fc19f18ce6cc7..86c09168628699982e5fd9a96220b74cd10713a7 100644
--- a/sql/test/sql_test_suite.h
+++ b/sql/test/sql_test_suite.h
@@ -13,12 +13,12 @@ namespace sql {
 class SQLTestSuite : public base::TestSuite {
  public:
   SQLTestSuite(int argc, char** argv);
-  virtual ~SQLTestSuite();
+  ~SQLTestSuite() override;
 
  protected:
   // Overridden from base::TestSuite:
-  virtual void Initialize() override;
-  virtual void Shutdown() override;
+  void Initialize() override;
+  void Shutdown() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SQLTestSuite);