Merge "FrameTracker: Mark begin, end and missing callbacks vsyncs for jank...

Merge "FrameTracker: Mark begin, end and missing callbacks vsyncs for jank traces" into udc-dev am: ff4a844c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22647942



Change-Id: I96f984f03823d6ccd1badd763ab11ea7365b73fd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>