LocalFileSystem::deleteFileSystem() is no longer used.

content/child/fileapi/file_system_dispatcher.cc

 // 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.
 
 #include "content/child/fileapi/file_system_dispatcher.h"
 
 #include <memory>
 
 #include "base/callback.h"
 #include "base/files/file_util.h"
@@ skipping 177 matching lines @@
 void FileSystemDispatcher::ResolveURL(
     const GURL& filesystem_url,
     const ResolveURLCallback& success_callback,
     const StatusCallback& error_callback) {
   int request_id = dispatchers_.Add(
       CallbackDispatcher::Create(success_callback, error_callback));
   ChildThreadImpl::current()->Send(new FileSystemHostMsg_ResolveURL(
           request_id, filesystem_url));
 }
 
-void FileSystemDispatcher::DeleteFileSystem(const GURL& origin_url,
-                                            storage::FileSystemType type,
-                                            const StatusCallback& callback) {
-  int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
-  ChildThreadImpl::current()->Send(new FileSystemHostMsg_DeleteFileSystem(
-          request_id, origin_url, type));
-}
-
 void FileSystemDispatcher::Move(
     const GURL& src_path,
     const GURL& dest_path,
     const StatusCallback& callback) {
   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
   ChildThreadImpl::current()->Send(new FileSystemHostMsg_Move(
           request_id, src_path, dest_path));
 }
 
 void FileSystemDispatcher::Copy(
@@ skipping 188 matching lines @@
                                       int64_t bytes,
                                       bool complete) {
   CallbackDispatcher* dispatcher = dispatchers_.Lookup(request_id);
   DCHECK(dispatcher);
   dispatcher->DidWrite(bytes, complete);
   if (complete)
     dispatchers_.Remove(request_id);
 }
 
 }  // namespace content