8212766: TestPromotionEventWithG1.java failed due to "RuntimeException: PLAB size is smaller than object size." Summary: Also send PLAB size in bytes, not in heap words. Reviewed-by: shade, sjohanss

/build/
/dist/
/.idea/
nbproject/private/
/webrev
/.src-rev
/.jib/
.DS_Store
.metadata/
.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
**/JTreport/**
**/JTwork/**