Merge "Doc Thread requirement." am: c545516e2c am: 40ce64b6db

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2094349

Change-Id: I95cebb43fcd70803fe0bdece39d57546053264cb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>