Linux's GfxInfo implementation blocks all features if the driver is blacklisted, even if the features have nothing to do with Linux, like D3D. Also, there's no way to get the adapter vendor or adapter device ID from this class.
Created attachment 581527 [details] [diff] [review]
Patch v1.0, fix Linux GfxInfo to do feature checks
As per code review comments from bug 710103. This patch goes before the one in bug 710103.
Try push: https://tbpl.mozilla.org/?tree=Try&rev=864451bfe1b9
Backed out from beta only:
See Bug 711656 for explanation.