Backport RT-40128 to 8u60
            
- backport of
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                    JDK-8089990 [WebView] fix the race with generate/copy the InspectorJS* files -           
- Resolved
 
-         
- duplicates
- 
                    JDK-8089990 [WebView] fix the race with generate/copy the InspectorJS* files -           
- Resolved
 
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