1 files changed, 42 insertions, 0 deletions
diff --git a/dom/fs/child/FileSystemWritableFileStreamChild.h b/dom/fs/child/FileSystemWritableFileStreamChild.h
new file mode 100644
index 0000000000..9728fc4c78
--- /dev/null
+++ b/dom/fs/child/FileSystemWritableFileStreamChild.h
@@ -0,0 +1,42 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef DOM_FS_CHILD_FILESYSTEMWRITABLEFILESTREAM_H_
+#define DOM_FS_CHILD_FILESYSTEMWRITABLEFILESTREAM_H_
+
+#include "mozilla/dom/PFileSystemWritableFileStreamChild.h"
+
+namespace mozilla::dom {
+
+class FileSystemWritableFileStream;
+
+class FileSystemWritableFileStreamChild
+    : public PFileSystemWritableFileStreamChild {
+ public:
+  FileSystemWritableFileStreamChild();
+
+  NS_INLINE_DECL_REFCOUNTING(FileSystemWritableFileStreamChild, override)
+
+  FileSystemWritableFileStream* MutableWritableFileStreamPtr() const {
+    MOZ_ASSERT(mStream);
+    return mStream;
+  }
+
+  void SetStream(FileSystemWritableFileStream* aStream);
+
+  void ActorDestroy(ActorDestroyReason aWhy) override;
+
+ private:
+  virtual ~FileSystemWritableFileStreamChild();
+
+  // Use a weak ref so actor does not hold DOM object alive past content use.
+  // The weak reference is cleared in FileSystemWritableFileStream::LastRelease.
+  FileSystemWritableFileStream* MOZ_NON_OWNING_REF mStream;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // DOM_FS_CHILD_FILESYSTEMWRITABLEFILESTREAM_H_