RFR: 8233648: [TESTBUG] DefaultMenuBarTest.java failing on macos [v3]

[Alexander Zvegintsev]

> Looks like this test does not fail anymore.
> 
> It does not fail once even without changes, but I've added extra `waitForIdle()` just for safety.
> 
> Checked on ~350 test runs.

Alexander Zvegintsev has updated the pull request incrementally with one additional commit since the last revision:

  added bugid, othervm

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6015/files
  - new: https://git.openjdk.java.net/jdk/pull/6015/files/e1c0625e..ae25e228

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6015&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6015&range=01-02

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6015.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6015/head:pull/6015

PR: https://git.openjdk.java.net/jdk/pull/6015