RFR: JDK-8277396: [TESTBUG] In DefaultButtonModelCrashTest.java, frame is accessed from main thread

[Sergey Bylokhov]

On Thu, 18 Nov 2021 13:17:16 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

> It's a little cleanup: make sure `frame` is accessed from EDT only, remove unused variables and imports.

Marked as reviewed by serb (Reviewer).

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

PR: https://git.openjdk.java.net/jdk/pull/6455