Revert "Cleanup deadcode in Rendering"

Source/core/rendering/RenderRegion.cpp

Index: Source/core/rendering/RenderRegion.cpp
diff --git a/Source/core/rendering/RenderRegion.cpp b/Source/core/rendering/RenderRegion.cpp
index 91d212f655ad879efec19f3165c64c8bc6ec9705..194b9bd924a3b07bcd967e1a77893c77f6a4c50f 100644
--- a/Source/core/rendering/RenderRegion.cpp
+++ b/Source/core/rendering/RenderRegion.cpp
@@ -144,6 +144,18 @@ void RenderRegion::repaintFlowThreadContentRectangle(const LayoutRect& repaintRe
     invalidatePaintRectangle(clippedRect);
 }
 
+LayoutUnit RenderRegion::logicalTopOfFlowThreadContentRect(const LayoutRect& rect) const
+{
+    ASSERT(isValid());
+    return flowThread()->isHorizontalWritingMode() ? rect.y() : rect.x();
+}
+
+LayoutUnit RenderRegion::logicalBottomOfFlowThreadContentRect(const LayoutRect& rect) const
+{
+    ASSERT(isValid());
+    return flowThread()->isHorizontalWritingMode() ? rect.maxY() : rect.maxX();
+}
+
 void RenderRegion::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const
 {
     if (!isValid()) {