[jdk8u-dev] RFR: 8079255: [TEST_BUG] [macosx] Test closed/java/awt/Robot/RobotWheelTest/RobotWheelTest fails for Mac only

[Joshua Cao]

Parity with Oracle. Clean backport. Also submitting a PR for https://bugs.openjdk.org/browse/JDK-8129827.

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Commit messages:
 - 8079255: [TEST_BUG] [macosx] Test closed/java/awt/Robot/RobotWheelTest/RobotWheelTest fails for Mac only

Changes: https://git.openjdk.org/jdk8u-dev/pull/140/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=140&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8079255
  Stats: 83 lines in 1 file changed: 83 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/140.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev pull/140/head:pull/140

PR: https://git.openjdk.org/jdk8u-dev/pull/140