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 40 matching lines @@
       Delegate* delegate,
       const scoped_refptr<base::SingleThreadTaskRunner>& db_thread);
 
   // Must call only before InitDatabaseWithCallback.
   void AddTable(std::unique_ptr<WebDatabaseTable> table);
 
   // Initializes the database and notifies caller via callback when complete.
   // Callback is called synchronously.
   void InitDatabase();
 
-  // Opens the database file from the profile path if an init has not yet been
-  // attempted. Separated from the constructor to ease construction/destruction
-  // of this object on one thread but database access on the DB thread. Returns
-  // the status of the database.
-  sql::InitStatus LoadDatabaseIfNecessary();
-
   // Shuts down the database.
   void ShutdownDatabase();
 
   // Task wrappers to update requests and and notify |request_manager_|. These
   // are used in cases where the request is being made from the UI thread and an
   // asyncronous callback is required to notify the client of |request|'s
   // completion.
   void DBWriteTaskWrapper(const WebDatabaseService::WriteTask& task,
                           std::unique_ptr<WebDataRequest> request);
   void DBReadTaskWrapper(const WebDatabaseService::ReadTask& task,
@@ skipping 10 matching lines @@
 
   WebDatabase* database() { return db_.get(); }
 
  protected:
   friend class base::RefCountedDeleteOnMessageLoop<WebDatabaseBackend>;
   friend class base::DeleteHelper<WebDatabaseBackend>;
 
   virtual ~WebDatabaseBackend();
 
  private:
+  // Opens the database file from the profile path if an init has not yet been
+  // attempted. Separated from the constructor to ease construction/destruction
+  // of this object on one thread but database access on the DB thread.
+  void LoadDatabaseIfNecessary();
+
   // Invoked on a db error.
   void DatabaseErrorCallback(int error, sql::Statement* statement);
 
   // Commit the current transaction.
   void Commit();
 
   // Path to database file.
   base::FilePath db_path_;
 
   // The tables that participate in managing the database. These are
@@ skipping 27 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_