RefCounted types should not have public destructors, sql/ and jingle/ edition

sql/sqlite_features_unittest.cc

Index: sql/sqlite_features_unittest.cc
diff --git a/sql/sqlite_features_unittest.cc b/sql/sqlite_features_unittest.cc
index e5cca499727658f61e439f22b9769f66c5f5ac01..d63409eaf4867c457f5732eb88dde8cfe80d5389 100644
--- a/sql/sqlite_features_unittest.cc
+++ b/sql/sqlite_features_unittest.cc
@@ -22,7 +22,7 @@ class StatementErrorHandler : public sql::ErrorDelegate {
   StatementErrorHandler() : error_(SQLITE_OK) {}
 
   virtual int OnError(int error, sql::Connection* connection,
-                      sql::Statement* stmt) {
+                      sql::Statement* stmt) OVERRIDE {
     error_ = error;
     const char* sql_txt = stmt ? stmt->GetSQLStatement() : NULL;
     sql_text_ = sql_txt ? sql_txt : "no statement available";
@@ -38,6 +38,9 @@ class StatementErrorHandler : public sql::ErrorDelegate {
 
   const char* sql_statement() const { return sql_text_.c_str(); }
 
+ protected:
+  virtual ~StatementErrorHandler() {}
+
  private:
   int error_;
   std::string sql_text_;