RFR: 8334320: Replace vmTestbase/metaspace/share/TriggerUnloadingWithWhiteBox.java with ClassUnloadCommon from testlibrary

[Coleen Phillimore]

On Fri, 17 Jan 2025 13:43:35 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> Rename and make TriggerUnloadingWithWhiteBox call ClassUnloadCommon.triggerUnloading() instead of WB.fullGC().

Thanks for the reviews Leonid and David.

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PR Comment: https://git.openjdk.org/jdk/pull/23174#issuecomment-2632354077