hg: jdk/sandbox: 8227927: Move ParallelCleaningTask back to G1

[chris.hegarty at oracle.com]

Changeset: 4db4d0d14390
Author:    zgu
Date:      2019-07-24 08:34 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/4db4d0d14390

8227927: Move ParallelCleaningTask back to G1
Reviewed-by: tschatzl, kbarrett

! src/hotspot/share/gc/g1/g1CollectedHeap.cpp
+ src/hotspot/share/gc/g1/g1ParallelCleaning.cpp
+ src/hotspot/share/gc/g1/g1ParallelCleaning.hpp
! src/hotspot/share/gc/shared/parallelCleaning.cpp
! src/hotspot/share/gc/shared/parallelCleaning.hpp