[9] request for review: JDK-8089990 [WebView] fix the race with generate/copy the InspectorJS* files

[Anton V. Tarasov]

Hi Kevin,

Please, review the fix:

JIRA: https://bugs.openjdk.java.net/browse/JDK-8089990
webrev: http://cr.openjdk.java.net/~ant/JDK-8089990/webrev.0

Thanks,
Anton.