hg: jdk/sandbox: 8248227: Shenandoah: Refactor Shenandoah::heap() to match other GCs

[chris.hegarty at oracle.com]

Changeset: e9398bf87ad1
Author:    zgu
Date:      2020-06-29 10:14 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/e9398bf87ad1

8248227: Shenandoah: Refactor Shenandoah::heap() to match other GCs
Reviewed-by: shade

! src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.inline.hpp