The GTK+ backend contains some dead code in the FontPlatformData, will provide a patch.
Created attachment 16293 [details] Proposed Patch v1
Created attachment 16294 [details] Proposed Patch v2 Removes the declaration of the function as well.
Comment on attachment 16294 [details] Proposed Patch v2 + Reviewed by . Please leave the "NOBODY (OOPS!)" part of this line in patches you submit in the future. r=me
Landed in r25590.