Merge "Small fixes to DumpManager" into udc-dev am: 88debc70 am: 7bc572e3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22932416



Change-Id: Ic3fd96eb5579e1c49bc8c901464ca5ad38ff45cd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>