This directory contains part of the browser side implementation of the File System Access API.
This specification for API is split across two repositories:
SyncAccessHandle API, andshow*Picker() APIs.//storage/browser/file_system/ contains the backend this API is built on top of, blink/renderer/modules/file_system_access contains the renderer side implementation and blink/public/mojom/file_system_access contains the mojom interfaces for these APIs.