Jason Simmons 82097a4268
Move Picture.toImage rasterization to the GPU thread (#7442)
Reuses the implementation that was previously done for Scene.toImage
(see 20c805c973)

This introduces a breaking API change:
Picture.toImage is now asynchronous and returns a Future<Image>

Fixes https://github.com/flutter/flutter/issues/23621
2019-01-14 09:39:03 -08:00
..