kFileSystemTypeIsolated should be only used in the URL exposed to renderer

webkit/fileapi/isolated_mount_point_provider.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 "webkit/fileapi/isolated_mount_point_provider.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_path.h"
@@ skipping 83 matching lines @@
 bool IsolatedMountPointProvider::IsRestrictedFileName(
     const FilePath& filename) const {
   // TODO(kinuko): We need to check platform-specific restricted file names
   // before we actually start allowing file creation in isolated file systems.
   return false;
 }
 
 FileSystemFileUtil* IsolatedMountPointProvider::GetFileUtil(
     FileSystemType type) {
   switch (type) {
-    case kFileSystemTypeIsolated:
     case kFileSystemTypeNativeLocal:
       return isolated_file_util_.get();
     case kFileSystemTypeDragged:
       return dragged_file_util_.get();
     case kFileSystemTypeNativeMedia:
       return native_media_file_util_.get();
     case kFileSystemTypeDeviceMedia:
 #if defined(SUPPORT_MEDIA_FILESYSTEM)
       return device_media_file_util_.get();
 #endif
@@ skipping 57 matching lines @@
 void IsolatedMountPointProvider::DeleteFileSystem(
     const GURL& origin_url,
     FileSystemType type,
     FileSystemContext* context,
     const DeleteFileSystemCallback& callback) {
   NOTREACHED();
   callback.Run(base::PLATFORM_FILE_ERROR_INVALID_OPERATION);
 }
 
 }  // namespace fileapi