Merge "Added methods to dump a SparseArray on DumpUtils." into udc-dev am: bb0278a3a3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22530808

Change-Id: Iee415f99ef2327fba16ecf828d8d12db2c4642e2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>