This is a metal specific change, that implements vsync support for fixing frame tearing.
------------- Commit messages: - Backport 43d392040595cded591126e801c4747f72330905 Changes: https://git.openjdk.org/jfx25u/pull/37/files Webrev: https://webrevs.openjdk.org/?repo=jfx25u&pr=37&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8335748 Stats: 147 lines in 11 files changed: 76 ins; 25 del; 46 mod Patch: https://git.openjdk.org/jfx25u/pull/37.diff Fetch: git fetch https://git.openjdk.org/jfx25u.git pull/37/head:pull/37 PR: https://git.openjdk.org/jfx25u/pull/37
