[Development] [Mac] tst_qquickwindow::testWindowVisibilityOrder() regression

[Albert Astals Cid]

It seems tst_qquickwindow::testWindowVisibilityOrder() has regressed
in the 5.4 branch (either because of qtdeclarative or qtbase changes)
and is not letting changes to the branch integrate.

I've run it locally here (linux) and get no failure, so it may be Mac
specific since it always seem to fail in the Mac builder.

Can anyone with a Mac please have a look?

http://testresults.qt.io/ci/QtDeclarative_5.4_Integration/build_00605/macx-clang_developer-build_qtnamespace_OSX_10.7/log.txt.gz

Cheers,
  Albert