** Code is currently in M-C but pref'd off. Q1 remaining work to pref it on.
* {{ok|Invalidation via DisplayList Analysis({{bug|539356}})}}
* {{ok|Refresh driver Invalidation / Asynchronous Painting ({{bug|598482}})}}
* {{done|Font cache performance improvements ({{bug|703100}})}}
* {{prev|Continue SVG migration to DisplayList (Performance)}}