Bug 913603 - Re-inline SaturatingUnionEdges and remove the unused SaturatingInflate - r=mats
Bug 917032 part 1: Do flex layout in content-box space, rather than in frame-rect (border-box) space, and adjust for border/padding at the end of reflow. r=mats
Bug 917032 part 2: Make PhysicalPositionFromLogicalPosition() take the content-box size, so it can do polarity-flipping if necessary. r=mats
Bug 917032 part 3: Move flex item physicalPosn computation up a bit higher. r=mats