setMustDiscardMarginBefore 1083 Source/core/rendering/RenderBlockFlow.cpp             setMustDiscardMarginBefore();
setMustDiscardMarginBefore 1289 Source/core/rendering/RenderBlockFlow.cpp         setMustDiscardMarginBefore(style()->marginBeforeCollapse() == MDISCARD);
setMustDiscardMarginBefore  399 Source/core/rendering/RenderBlockFlow.h     void setMustDiscardMarginBefore(bool = true);