RFR: 8278134: Move static utility methods to infrastructure (EditAndScrollTest) [v2]

[Ajit Ghaisas]

On Thu, 16 Dec 2021 12:54:27 GMT, Jeanette Winzenburg <fastegal at openjdk.org> wrote:

>> Extracted static test utility methods from EditAndScrollTest into new VirtualizedControlTestUtils, added rudimentary tests for the methods.
>
> Jeanette Winzenburg has updated the pull request incrementally with one additional commit since the last revision:
> 
>   fixed c&p error in doc

Marked as reviewed by aghaisas (Reviewer).

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

PR: https://git.openjdk.java.net/jfx/pull/690