Bug 772484 - Allow user to cancel add-on update check and clean up correctly when they do. r=Unfocused
Bug 983019 - Fix a typo in the aMetrics->maxDescent initialization when we failed to create the Cairo font. Also fix a typo so that aSpaceGlyph out-param is assigned as intended. And make the code easier to read. r=jfkthame
Bug 983068 - Fix float/half float texture validation. r=jgilbert