Merge "Use semaphore instead of condition variable" into tm-dev am: 38332d52...

Merge "Use semaphore instead of condition variable" into tm-dev am: 38332d52 am: 52010fe2 am: 64921f06

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/18291016



Change-Id: I48275c9aa43954a5770bfafa6f7576bb73f4bcc4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>