RFR (S): 8234000: Make HeapRegion::bottom/end/hrm_index const

[Kim Barrett]

> On Nov 12, 2019, at 9:42 AM, Thomas Schatzl <thomas.schatzl at oracle.com> wrote:
> 
> Hi all,
> 
>  can I have reviews for this very small change that removes the possibility to change the bottom/end/hrm_index members in HeapRegion?
> 
> This is not required functionality, so I thought it would be good to clean up.
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8234000
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8234000/webrev/
> Testing:
> local compilation, hs-tier1
> 
> Thanks,
>  Thomas

Looks good.