eEarlyWakeup flag is used as a hint to SurfaceFlinger to adjust its
offsets so it can wakeup earlier and have sufficient time to compose
more complex scenes.
This flag has been replaced with explicit start and stop flags which
ensure the SurfaceFlinger offsets remain consistent during animation.
Bug: 158127834
Test: go/wm-smoke
Test: systrace to verify new tracepoint and offset behavior
Change-Id: Ib9c35c01a6bf02f88ec7cb1778e01909bd2f9055
2ed39d82db