Merge "Register callback to statsD for AppSearchStorageInfo" into sc-dev am: 08cb90a18f am: ed4e7ccbc6

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

Change-Id: Ib3a8f9dcea2b8d4b2f172fcfe3796af025ffab8c