Merge "Add atom for general external storage access stats" into rvc-dev am:...

Merge "Add atom for general external storage access stats" into rvc-dev am: b1951ee2 am: f62d71d5 am: 04a1c4b7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11894164

Change-Id: Id65273cf7042e7b2470108c4e5333a5404d06001