Kaushik Iska 60f620b4b2 [metrics] Record the frame target time on the layer tree (flutter/engine#17281)
This lets us measure stats on when the frame was
scheduled to be rendered vs when it finished rasterizing.

Note: This isn't propagated to the FrameTimings struct yet,
that is to be followed.
2020-03-24 22:00:21 -07:00
..