RFR: 8237882: ZGC: Removed ZUtils::round_{up,down}_power_of_2() declarations

[Per Liden]

Thanks Stuart!

/Per

On 1/27/20 4:30 PM, Stuart Monteith wrote:
> This looks OK (not a reviewer).
> 
> On Mon, 27 Jan 2020 at 13:57, Per Liden <per.liden at oracle.com> wrote:
>>
>> JDK-8234331 removed ZUtils::round_{up,down}_power_of_2() but left the
>> function declarations in the ZUtils class.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8237882
>> Webrev: http://cr.openjdk.java.net/~pliden/8237882/webrev.0
>>
>> /Per