LeftBorderEdge   1410 Source/core/rendering/RenderBoxModelObject.cpp     AllBorderEdges = TopBorderEdge | BottomBorderEdge | LeftBorderEdge | RightBorderEdge
LeftBorderEdge   1427 Source/core/rendering/RenderBoxModelObject.cpp         || (flags & (BottomBorderEdge | LeftBorderEdge)) == (BottomBorderEdge | LeftBorderEdge)
LeftBorderEdge   1428 Source/core/rendering/RenderBoxModelObject.cpp         || (flags & (LeftBorderEdge | TopBorderEdge)) == (LeftBorderEdge | TopBorderEdge);