RFR: 8342912: Remove calls to doPrivileged in fxml

[Andy Goryachev]

Removes `doPrivileged` in the following module:

* javafx.fxml

See JDK-8342441 for details.

As a helpful hint for reviewers, I recommend reviewing this using the "Hide whitespace" option.

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Commit messages:
 - Merge remote-tracking branch 'origin/master' into 8342912.do.privileged.fxml
 - 8342912: Remove calls to doPrivileged in fxml

Changes: https://git.openjdk.org/jfx/pull/1610/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1610&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342912
  Stats: 67 lines in 4 files changed: 0 ins; 52 del; 15 mod
  Patch: https://git.openjdk.org/jfx/pull/1610.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1610/head:pull/1610

PR: https://git.openjdk.org/jfx/pull/1610