Revert "Cleanup deadcode in Rendering"

Source/core/rendering/RenderRegion.cpp

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 126 matching lines @@
     // Put the region rect into the region's physical coordinate space.
     clippedRect.setLocation(regionLocation + (clippedRect.location() - flippedFlowThreadPortionRect.location()));
 
     // Now switch to the region's writing mode coordinate space and let it repaint itself.
     flipForWritingMode(clippedRect);
 
     // Issue the repaint.
     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()) {
         RenderBlockFlow::computeIntrinsicLogicalWidths(minLogicalWidth, maxLogicalWidth);
         return;
     }
 
     minLogicalWidth = m_flowThread->minPreferredLogicalWidth();
     maxLogicalWidth = m_flowThread->maxPreferredLogicalWidth();
 }
 
 } // namespace blink