RFR: 8328242: Add a log area to the PassFailJFrame [v2]

[lawrence.andrews]

On Fri, 15 Mar 2024 15:33:30 GMT, lawrence.andrews <duke at openjdk.org> wrote:

>> Okay. Most methods of the builder use `this.` prefix when assigning something to a field.
>
> How about having a clear log button. Just an idea
> Example : 
> I have a mouse event test & I am using the logArea to add all the events into it. But when I have to file a bug & I wanted to show only the required log in the log area in the screen shot by clicking on the 'screen capture' button. I have to clear the log in the logarea and repeat the test and show only the required log in the log area. In this scenario if we can provide a 'Clear log' button will be much useful .

'Clear log' button calling logClear().

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PR Review Comment: https://git.openjdk.org/jdk/pull/18319#discussion_r1526468319