Summary:
Pixel copy is a more reliable and consistent way to take a snapshot rather than drawing into a canvas. It accepts either:
Surface
SurfaceView
Window
For root views that belong to an activity its easy to get the window so we do that here.
In the next diff we solve this for other root views
Reviewed By: lblasa
Differential Revision: D50845282
fbshipit-source-id: 3968828dedd1e96a854b907e0fd152ad64993d95
d85adc030f