Merge "logd: update SerializedLogChunk for new prune calcuations" am: 63e7541faa am: 8a5c635a8f

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1362308

Change-Id: I5ef2e20741d9f639096576b187fdb27cae8bba5d