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

components/filesystem/file_impl.h

 // 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.
 
 #ifndef COMPONENTS_FILESYSTEM_FILE_IMPL_H_
 #define COMPONENTS_FILESYSTEM_FILE_IMPL_H_
 
 #include <stdint.h>
 
 #include "base/files/file.h"
 #include "base/files/scoped_file.h"
 #include "base/macros.h"
 #include "components/filesystem/public/interfaces/directory.mojom.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace filesystem {
 
 class LockTable;
+class SharedTempDir;
 
 class FileImpl : public File {
  public:
   FileImpl(mojo::InterfaceRequest<File> request,
            const base::FilePath& path,
            uint32_t flags,
+           scoped_refptr<SharedTempDir> temp_dir,
            scoped_refptr<LockTable> lock_table);
   FileImpl(mojo::InterfaceRequest<File> request,
            const base::FilePath& path,
            base::File file,
+           scoped_refptr<SharedTempDir> temp_dir,
            scoped_refptr<LockTable> lock_table);
   ~FileImpl() override;
 
   // Returns whether the underlying file handle is valid.
   bool IsValid() const;
 
   // Attempts to perform the native operating system's locking operations on
   // the internal File handle
   base::File::Error RawLockFile();
   base::File::Error RawUnlockFile();
@@ skipping 23 matching lines @@
            const DupCallback& callback) override;
   void Flush(const FlushCallback& callback) override;
   void Lock(const LockCallback& callback) override;
   void Unlock(const UnlockCallback& callback) override;
   void AsHandle(const AsHandleCallback& callback) override;
 
  private:
   mojo::StrongBinding<File> binding_;
   base::File file_;
   base::FilePath path_;
+  scoped_refptr<SharedTempDir> temp_dir_;
   scoped_refptr<LockTable> lock_table_;
 
   DISALLOW_COPY_AND_ASSIGN(FileImpl);
 };
 
 }  // namespace filesystem
 
 #endif  // COMPONENTS_FILESYSTEM_FILE_IMPL_H_