[Line Layout API] Add border*() to LineLayoutBoxModel

Source/core/layout/line/InlineFlowBox.cpp

Index: Source/core/layout/line/InlineFlowBox.cpp
diff --git a/Source/core/layout/line/InlineFlowBox.cpp b/Source/core/layout/line/InlineFlowBox.cpp
index 923e5209620899bc16fdffa61b7219ffd6d55bb6..046066ae8be5acf45510f9487ebc974e0643367f 100644
--- a/Source/core/layout/line/InlineFlowBox.cpp
+++ b/Source/core/layout/line/InlineFlowBox.cpp
@@ -623,7 +623,7 @@ void InlineFlowBox::placeBoxesInBlockDirection(LayoutUnit top, LayoutUnit maxHei
             const FontMetrics& fontMetrics = curr->layoutObject().style(isFirstLineStyle())->fontMetrics();
             newLogicalTop += curr->baselinePosition(baselineType) - fontMetrics.ascent(baselineType);
             if (curr->isInlineFlowBox()) {
-                LayoutBoxModelObject& boxObject = toLayoutBoxModelObject(curr->layoutObject());
+                LineLayoutBoxModel boxObject = LineLayoutBoxModel(curr->lineLayoutItem());
                 newLogicalTop -= boxObject.style(isFirstLineStyle())->isHorizontalWritingMode() ? boxObject.borderTop() + boxObject.paddingTop() :
                     boxObject.borderRight() + boxObject.paddingRight();
                 borderPaddingHeight = boxObject.borderAndPaddingLogicalHeight();