LocalFileSystem::deleteFileSystem() is no longer used.

content/child/fileapi/file_system_dispatcher.h

 // Copyright (c) 2012 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 CONTENT_CHILD_FILEAPI_FILE_SYSTEM_DISPATCHER_H_
 #define CONTENT_CHILD_FILEAPI_FILE_SYSTEM_DISPATCHER_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 54 matching lines @@
   // IPC::Listener implementation.
   bool OnMessageReceived(const IPC::Message& msg) override;
 
   void OpenFileSystem(const GURL& origin_url,
                       storage::FileSystemType type,
                       const OpenFileSystemCallback& success_callback,
                       const StatusCallback& error_callback);
   void ResolveURL(const GURL& filesystem_url,
                   const ResolveURLCallback& success_callback,
                   const StatusCallback& error_callback);
-  void DeleteFileSystem(const GURL& origin_url,
-                        storage::FileSystemType type,
-                        const StatusCallback& callback);
   void Move(const GURL& src_path,
             const GURL& dest_path,
             const StatusCallback& callback);
   void Copy(const GURL& src_path,
             const GURL& dest_path,
             const StatusCallback& callback);
   void Remove(const GURL& path,
               bool recursive,
               const StatusCallback& callback);
   void ReadMetadata(const GURL& path,
@@ skipping 60 matching lines @@
   void OnDidWrite(int request_id, int64_t bytes, bool complete);
 
   IDMap<std::unique_ptr<CallbackDispatcher>> dispatchers_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_FILEAPI_FILE_SYSTEM_DISPATCHER_H_