Merge "Migrate pthread to std::thread" into main am: e4cc38fa27

Original change: https://android-review.googlesource.com/c/platform/system/core/+/3146916

Change-Id: Ida8deb94d807790a801f6d7bdb1428ee7fb2ec49
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>