SkiaRenderer's vulkan backend currently requires a VkSurfaceKHR.

Some platforms (Chrome OS) will need to use an alternate path that doesn't provide a VkSurfaceKHR. OverlaySurface [1] was added to support these platforms.

To support these platforms, SkiaRenderer can implement buffer management on top of OverlaySurface (like viz::BufferQueue but without the GLES dependency).

[1] https://cs.chromium.org/chromium/src/ui/ozone/public/overlay_surface.h?q=overlay_surface.h&sq=package:chromium&dr=CSs