mojo: Fix leveldb unittests by making fs::Directories cloneable.

components/filesystem/file_system_impl.cc

 // Copyright 2015 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 "components/filesystem/file_system_impl.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 24 matching lines @@
 }
 
 void FileSystemImpl::OpenTempDirectory(
     mojo::InterfaceRequest<Directory> directory,
     const OpenTempDirectoryCallback& callback) {
   // Set only if the |DirectoryImpl| will own a temporary directory.
   std::unique_ptr<base::ScopedTempDir> temp_dir(new base::ScopedTempDir);
   CHECK(temp_dir->CreateUniqueTempDir());
 
   base::FilePath path = temp_dir->path();
+  scoped_refptr<SharedTempDir> shared_temp_dir =
+      new SharedTempDir(std::move(temp_dir));
   new DirectoryImpl(
-      std::move(directory), path, std::move(temp_dir), lock_table_);
+      std::move(directory), path, std::move(shared_temp_dir), lock_table_);
   callback.Run(FileError::OK);
 }
 
 void FileSystemImpl::OpenPersistentFileSystem(
     mojo::InterfaceRequest<Directory> directory,
     const OpenPersistentFileSystemCallback& callback) {
   std::unique_ptr<base::ScopedTempDir> temp_dir;
   base::FilePath path = persistent_dir_;
   if (!base::PathExists(path))
     base::CreateDirectory(path);
 
+  scoped_refptr<SharedTempDir> shared_temp_dir =
+      new SharedTempDir(std::move(temp_dir));
+
   new DirectoryImpl(
-      std::move(directory), path, std::move(temp_dir), lock_table_);
+      std::move(directory), path, std::move(shared_temp_dir), lock_table_);
   callback.Run(FileError::OK);
 }
 
 }  // namespace filesystem