Merge "Register callback to statsD for AppSearchStorageInfo" into sc-dev am: 08cb90a18f am: 29243122a7 am: f3f6ccfc16

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15083854

Change-Id: I30098e2b24be14e7ad5da78cc43a1ebd11b517af