Merge "Add ability to enforce limits on docs per package and size of doc." into sc-dev am: 733537f1a6 am: 3f1689d267

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15177523

Change-Id: Idfa3c61f0bd6e4b27baaa6cfeac40203f7fab5a7