'''List of unmaintained features in WebKit'''

Format:
 * Feature (list of ports enabling it)

List (sorted alphabetically):
 * CSS Grid Layout (none)
 * CSS Flex Box (all?)
 * CSS Variables (none)
 * File System API (none)
 * Gesture Events (OS X)
 * HTML Dialog Element (none)
 * HTML Template Element ()
 * HTML notifications -- re-apply http://trac.webkit.org/changeset/140983 to remove
 * IndexedDB (GTK, EFL)
 * Memory Instrumentation (all)
 * Navigation Timing - WEB_TIMING (none)
 * RequestAutocomplete (none)
 * Threaded HTML Parser (none)
 * Web Inspector (most)
 * Shadow DOM (Only Web-facing APIs are guarded by this flag) (mac port does not use it. I am not sure other ports)