chromium/third_party/blink/renderer/modules/mojo/mojo_file_system_access.idl

[
    ContextEnabled=MojoJSFileSystemAccessHelper,
    Exposed=(Window),
    ImplementedAs=MojoFileSystemAccess
]
partial interface Mojo {
  // Allows pages with access to this capability to obtain a message pipe
  // corresponding to a FileSystemFileHandle's transfer token. This message
  // pipe corresponds to the FileSystemAccessTransferToken and can be passed
  // to the browser process over Mojo to identify a file, without requiring
  // the actual file path to be known to the renderer.
  static MojoHandle
        getFileSystemAccessTransferToken(FileSystemFileHandle fileHandle);
};