Bug 800996 - Add clear-selection action for start tiles, button transitions. r=mbrubeck
Bug 848973 - Make nsStyleDisplay::IsBlockInside() and friends work only on style structs for the passed in frame and document them. r=roc

--HG--
extra : rebase_source : a8559b62124bec058f2857d50cf7f65f176c3727
Bug 854614 - Root XPCLazyCallContext. r=terrence,bholley
Bug 836949 - Remove InternNonIntElementId/FetchElementId. r=jwalden
Bug 836949 - Remove obj parameter from ValueToId. r=njn
Bug 858551 part 1 - Make JSScript::{baseline, ion, parallelIon} private. r=djvj