RFR: JDK-8299052: ViewportOverlapping test fails intermittently on Win10 & Win11

[Alexey Ivanov]

On Tue, 20 Dec 2022 23:25:30 GMT, Harshitha Onkar <honkar at openjdk.org> wrote:

> ViewportOverlapping was failing intermittently on Windows (Win10 & 11). Added robot.setAutoWaitForIdle() to ViewportOverlapping and its base class (OverlappingTestBase) to stabilize the test.
> 
> Additionally added awt & swings tests to exclusiveAccess.dir in TEST.ROOT.

Maybe also expand imports in `OverlappingTestBase.java`?

test/jdk/java/awt/Mixing/AWT_Mixing/OverlappingTestBase.java line 464:

> 462:             robot.setAutoWaitForIdle(true);
> 463:         }catch(Exception ignorex) {
> 464:         }

Does it make sense to extract this code into a new method?

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PR: https://git.openjdk.org/jdk/pull/11747