Merge "Reset buffer after stop protolog to file" am: 18493d62 am: 140fb234 am: 83bb3e26

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2411151



Change-Id: Ia2bfdfc4821e0e11bd54f48710d8125346aad18d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>