Clean up the WebKit Sandbox rules to use the modern syntax:
;; Read-only preferences and data
Also get rid of duplicated macro and function definitions that are part of the core sandbox language.
Created attachment 295992 [details]
Created attachment 295995 [details]
Note: The changes in these sandbox profiles have been confirmed (with the Sandbox team) to be compatible with macOS 10.9 and newer.
Committed r209280: <http://trac.webkit.org/changeset/209280>