Recreate the WebData database on a catastrophic SQL error

components/webdata/common/web_database_service.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.
 
 // Chromium settings and storage represent user-selected preferences and
 // information and MUST not be extracted, overwritten or modified except
 // through Chromium defined APIs.
 
 #ifndef COMPONENTS_WEBDATA_COMMON_WEB_DATABASE_SERVICE_H_
 #define COMPONENTS_WEBDATA_COMMON_WEB_DATABASE_SERVICE_H_
@@ skipping 102 matching lines @@
   void RegisterDBErrorCallback(const DBLoadErrorCallback& callback);
 
   bool db_loaded() const { return db_loaded_; };
 
  private:
   class BackendDelegate;
   friend class BackendDelegate;
   friend class base::RefCountedDeleteOnMessageLoop<WebDatabaseService>;
   friend class base::DeleteHelper<WebDatabaseService>;
 
-  typedef std::vector<DBLoadedCallback> LoadedCallbacks;
-  typedef std::vector<DBLoadErrorCallback> ErrorCallbacks;
+  using LoadedCallbacks = std::vector<DBLoadedCallback>;
+  using ErrorCallbacks = std::vector<DBLoadErrorCallback>;
 
   virtual ~WebDatabaseService();
 
   void OnDatabaseLoadDone(sql::InitStatus status,
                           const std::string& diagnostics);
 
   base::FilePath path_;
 
   // The primary owner is |WebDatabaseService| but is refcounted because
   // PostTask on DB thread may outlive us.
@@ skipping 10 matching lines @@
 
   scoped_refptr<base::SingleThreadTaskRunner> db_thread_;
 
   // All vended weak pointers are invalidated in ShutdownDatabase().
   base::WeakPtrFactory<WebDatabaseService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebDatabaseService);
 };
 
 #endif  // COMPONENTS_WEBDATA_COMMON_WEB_DATABASE_SERVICE_H_