Bug 1031934 - Handle collapsing a row / row-group with no cell frames inside it.  r=roc
Bug 1031726 - Implement clip:rect() correctly when fragments are involved, for both box-decoration-break:slice/clone.  r=roc
Bug 1031701 - Remove FlexContainerFrame::MarginComponentForSide(), use nsMargin::Side() instead.  r=dholbert