I would not be opposed to forcing mFallbackCanvasBackend to SKIA if it somehow ended up as NONE, if you want to write a patch.
Bug 1695725 Comment 10 Edit History
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I would not be opposed to forcing mFallbackCanvasBackend to SKIA if it somehow ended up as NONE, if you want to write a patch (or maybe to mSoftwareBackend if you wanted to be generic).