Add threading boundaries on SkImage #2761
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Add thread boundaries on images that could be used in a different thread than the one they were created on. The solution is to use the graphic context available in the thread instead of using the "saved" within the image.
Skia now has a
SK_IMAGE_READ_PIXELS_DISABLE_LEGACY_APIthat helps with catching these (however APIs likemakeImageSnapshot(GrDirectContext* gr = nullptr)cannot be caught by the flag).