hg: jdk/jdk: 8209839: [Backout] Backout JDK-8206467 Refactor G1ParallelCleaningTask into shared

[thomas.schatzl at oracle.com]

Changeset: d14d24d076b7
Author:    tschatzl
Date:      2018-08-22 16:01 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/d14d24d076b7

8209839: [Backout] Backout JDK-8206467 Refactor G1ParallelCleaningTask into shared
Reviewed-by: zgu

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