RFR: 8220484: JFXPanel renders a slanted image with a hidpi monitor scale of 125% or 175% [v4]

[Kevin Rushforth]

On Tue, 7 Jul 2020 12:15:11 GMT, Oliver Schmidtmer <github.com+10960818+Schmidor at openjdk.org> wrote:

>> I note that this does work for me. So copying the pattern used by `systemTests` into the `swt` project might be all
>> that is needed to get it to work there.
>
> I assumed I should add it to the robot package, as it is also a visual test. I've moved it to the swt module

I verified that the SWT test works well, when manually enabled in build.gradle and if it runs in isolation. As for
putting it in a `robot` sub-package, that seems helpful, but since it won't be enabled anyway, is optional.

We can file a follow-up issue to enable SWT tests again (as long as they aren't enabled by default. My thought is to
change the default value of `SWT_TEST` to false, and then enable the tests on platforms other than macOS when the
`SWT_TEST` is set to `true` along with `FULL_TEST`).

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PR: https://git.openjdk.java.net/jfx/pull/246