RESTRICT AUTOMERGE Make log reader thread a class member am: 03de4e4f1a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24181420

Change-Id: I8c48dead434819fdf9415636aee035b01fe8f905
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>