RFR(xxs): 8150648: Re-enable TestPLABResize.java after JDK-8150183 is fixed

[Thomas Schatzl]

Hi,

On Thu, 2016-03-17 at 16:50 +0300, Michail Chernov wrote:
> Hi
> 
> Could I have a review for this small change which returns quarantined
> test back, please?
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8150648
> Webrev: http://cr.openjdk.java.net/~mchernov/8150648/webrev.00/
> 
> I will need a sponsor.

  looks good. I can sponsor if nobody steps up.

Thomas