Bug 1036264 - Always pass true for ignoreRootScrollFrame. r=kats, a=1.4+
Bug 1024148 - Part 1: Merge nsDisplayOpacity items together. r=mattwoodrow, a=2.0+
Bug 1024148 - Part 2: Merge nsDisplayOpacity into nsDisplayBackgroundColor. r=mattwoodrow, a=2.0+