This PR adds another accessibility preference that is available on all supported desktop platforms:
1. **Windows**: Settings -> Accessibility -> Visual Effects -> Always show scroll bars 2. **macOS**: System Settings -> Appearance -> Show scroll bars 3. **Ubuntu**: Settings -> Accessibility -> Seeing -> Always show scroll bars When the OS setting is changed, all platforms report updates that can be observed in JavaFX. The manual test application `test/manual/events/PlatformPreferencesChangedTest` can be used to test the feature. ------------- Commit messages: - Add reducedScrollBars preference Changes: https://git.openjdk.org/jfx/pull/1618/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1618&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8343336 Stats: 203 lines in 18 files changed: 148 ins; 16 del; 39 mod Patch: https://git.openjdk.org/jfx/pull/1618.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1618/head:pull/1618 PR: https://git.openjdk.org/jfx/pull/1618