Harry Terkelsen 07a3aeb67e Flesh out the CanvasKit backend some more (flutter/engine#13275)
* Flesh out the CanvasKit backend some more

- Implement `drawOval` and `addOval`
- Use the Canvas's own `getSaveCount`
- Implement `skew`
- Implement `saveLayerWithoutBounds`
- Document things which we don't plan to implement in the Skia backend

* Remove `rasterCache` fake support

* Remove saveCount setter
2019-10-22 13:15:35 -07:00
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