Merge "Improve synchronization of ProcessCpuTracker" into main am: 564f051428

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2833790

Change-Id: I390a134ad17dbb7b39b4d7549a6c5ccc2bef3230
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>