Recreate the WebData database on a catastrophic SQL error

components/webdata/common/web_database_backend.h

 // Copyright 2013 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_WEBDATA_COMMON_WEB_DATABASE_BACKEND_H_
 #define COMPONENTS_WEBDATA_COMMON_WEB_DATABASE_BACKEND_H_
 
 #include <memory>
 
 #include "base/callback_forward.h"
@@ skipping 79 matching lines @@
  protected:
   friend class base::RefCountedDeleteOnMessageLoop<WebDatabaseBackend>;
   friend class base::DeleteHelper<WebDatabaseBackend>;
 
   virtual ~WebDatabaseBackend();
 
  private:
   // Invoked on a db error.
   void DatabaseErrorCallback(int error, sql::Statement* statement);
 
+  // In the case of a catastrophic DB error, this will be called to recreate the
+  // corrupt database.
+  void RazeAndCloseDatabase();
+
   // Commit the current transaction.
   void Commit();
 
   // Path to database file.
   base::FilePath db_path_;
 
   // The tables that participate in managing the database. These are
   // owned here but other than that this class does nothing with
   // them. Their initialization is in whatever factory creates
   // WebDatabaseService, and lookup by type is provided by the
@@ skipping 24 matching lines @@
   // diagnostic information.
   std::string diagnostics_;
 
   // Delegate. See the class definition above for more information.
   std::unique_ptr<Delegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(WebDatabaseBackend);
 };
 
 #endif  // COMPONENTS_WEBDATA_COMMON_WEB_DATABASE_BACKEND_H_