This PR adds a thread check to verify that native iOS UI code runs on the main thread, in a similar way as how `(void)setFrame:(CGRect)boundsRect` calls `_setBounds()`.
------------- Commit messages: - rename function - Move native iOS UI code to main thread Changes: https://git.openjdk.org/jfx/pull/2073/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=2073&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8377706 Stats: 10 lines in 1 file changed: 9 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jfx/pull/2073.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/2073/head:pull/2073 PR: https://git.openjdk.org/jfx/pull/2073
