Bug 865516 - Optimize access to the heap with a constant index. r=luke
Bug 912820 - Make --disable-content-sandbox* configure flags work. r=gps
Bug 886646 - Part 1: Support position:sticky in the CSS parser, enabled by a preference. r=heycam
Bug 886646 - Part 2: Include sticky positioning in nsStyleDisplay::IsRelativelyPositionedStyle. r=heycam
Bug 886646 - Part 3: Compute sticky positioning offsets for getComputedStyle(). r=heycam
Bug 886646 - Part 5: Always build a stacking context for sticky positioned elements. r=dbaron
Bug 886646 - Part 6: Implement sticky positioning, calculated on reflow and scroll. r=dbaron, r=dholbert
Bug 886646 - Part 7: Reftests for sticky positioning. r=dbaron