RFR: 8296934: Write a test to verify whether Undecorated Frame can be iconified or not [v2]

[Anto J]

On Wed, 4 Jan 2023 22:42:21 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

> Looks fine, I assume the code was tested in the mach5.

Yes, It's working fine in mach5

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PR: https://git.openjdk.org/jdk/pull/11812