Merge "Expose 'ParcelableHolder' as SystemApi" am: 135efb0b73 am: 5e1cacaa28 am: d5bae241d4

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1458065

Change-Id: I5f8d912b43a546aca9cbbd8d9c480ffa101c1452