Merge "Tracking number of threads in threadpools. Added tests for max total...

Merge "Tracking number of threads in threadpools. Added tests for max total thread count." am: 85f75bc9 am: dccd8123 am: e24c255f am: a445902a am: dbc8480c

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2072121



Change-Id: If2b3a1b19156a54dbba7a1a7a5f9089673d21ad8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>