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: c6fe33fa am: 6c6674c6

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

Change-Id: I430b2b5256e0de8a38634a5c1222c39d401f9388