Clean backport to `jfx11u`.
-------------
Commit messages:
- 8277457: AccessControlException: access denied ("java.net.NetPermission"
"getCookieHandler")
Changes: https://git.openjdk.java.net/jfx11u/pull/70/files
Webrev: https://webrevs.openjdk.java.net/?repo=jfx11u&pr=70&range=00
Issue: https://bugs.openjdk.java.net/browse/JDK-8277457
Stats: 101 lines in 2 files changed: 99 ins; 0 del; 2 mod
Patch: https://git.openjdk.java.net/jfx11u/pull/70.diff
Fetch: git fetch https://git.openjdk.java.net/jfx11u pull/70/head:pull/70
PR: https://git.openjdk.java.net/jfx11u/pull/70
