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

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

Change-Id: I7cac8437e6f6d0d3d3a933e4dfb55e7b48606d0d