[jdk11u-dev] RFR: 8316240: Open source several add/remove MenuBar manual tests

[Andrew Lu]

I backport this for parity with 11.0.25-oracle.

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Commit messages:
 - Backport 3809d69ac4b3d186ccdc336949b658e4671347c8

Changes: https://git.openjdk.org/jdk11u-dev/pull/2761/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2761&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316240
  Stats: 514 lines in 4 files changed: 514 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2761.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2761/head:pull/2761

PR: https://git.openjdk.org/jdk11u-dev/pull/2761