kFileSystemTypeIsolated should be only used in the URL exposed to renderer

webkit/tools/test_shell/simple_file_system.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/tools/test_shell/simple_file_system.h"
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
@@ skipping 246 matching lines @@
 }
 
 // static
 void SimpleFileSystem::CleanupOnIOThread() {
   g_io_thread = NULL;
   g_blob_storage_controller = NULL;
 }
 
 bool SimpleFileSystem::HasFilePermission(
     const fileapi::FileSystemURL& url, FilePermission permission) {
-  // Disallow writing on isolated file system, otherwise return ok.
-  return (url.type() != fileapi::kFileSystemTypeIsolated ||
+  // Disallow writing on dragged file system, otherwise return ok.
+  return (url.type() != fileapi::kFileSystemTypeDragged ||
           permission == FILE_PERMISSION_READ);
 }
 
 FileSystemOperationInterface* SimpleFileSystem::GetNewOperation(
     const fileapi::FileSystemURL& url) {
   return file_system_context_->CreateFileSystemOperation(url);
 }
 
 FileSystemOperationInterface::StatusCallback
 SimpleFileSystem::FinishHandler(WebFileSystemCallbacks* callbacks) {
@@ skipping 110 matching lines @@
     const FilePath& platform_path,
     const scoped_refptr<webkit_blob::ShareableFileReference>& file_ref) {
   DCHECK(g_io_thread);
   if (result == base::PLATFORM_FILE_OK) {
     g_io_thread->PostTask(
         FROM_HERE,
         base::Bind(&RegisterBlob, blob_url, platform_path));
   }
   DidGetMetadata(callbacks, result, info, platform_path);
 }