Remove some dead code from rendering/ folder

Source/core/rendering/RenderFlexibleBox.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 359 matching lines @@
 }
 
 Length RenderFlexibleBox::flexBasisForChild(RenderBox* child) const
 {
     Length flexLength = child->style()->flexBasis();
     if (flexLength.isAuto())
         flexLength = isHorizontalFlow() ? child->style()->width() : child->style()->height();
     return flexLength;
 }
 
-void RenderFlexibleBox::setCrossAxisExtent(LayoutUnit extent)
-{
-    if (isHorizontalFlow())
-        setHeight(extent);
-    else
-        setWidth(extent);
-}
-
 LayoutUnit RenderFlexibleBox::crossAxisExtentForChild(RenderBox* child) const
 {
     return isHorizontalFlow() ? child->height() : child->width();
 }
 
 LayoutUnit RenderFlexibleBox::mainAxisExtentForChild(RenderBox* child) const
 {
     return isHorizontalFlow() ? child->width() : child->height();
 }
 
@@ skipping 173 matching lines @@
         return child->marginBottom();
     case LeftToRightWritingMode:
         return child->marginLeft();
     case RightToLeftWritingMode:
         return child->marginRight();
     }
     ASSERT_NOT_REACHED();
     return marginTop();
 }
 
-LayoutUnit RenderFlexibleBox::flowAwareMarginAfterForChild(RenderBox* child) const
-{
-    switch (transformedWritingMode()) {
-    case TopToBottomWritingMode:
-        return child->marginBottom();
-    case BottomToTopWritingMode:
-        return child->marginTop();
-    case LeftToRightWritingMode:
-        return child->marginRight();
-    case RightToLeftWritingMode:
-        return child->marginLeft();
-    }
-    ASSERT_NOT_REACHED();
-    return marginBottom();
-}
-
 LayoutUnit RenderFlexibleBox::crossAxisMarginExtentForChild(RenderBox* child) const
 {
     return isHorizontalFlow() ? child->marginHeight() : child->marginWidth();
 }
 
 LayoutUnit RenderFlexibleBox::crossAxisScrollbarExtent() const
 {
     return isHorizontalFlow() ? horizontalScrollbarHeight() : verticalScrollbarWidth();
 }
 
 LayoutPoint RenderFlexibleBox::flowAwareLocationForChild(RenderBox* child) const
 {
     return isHorizontalFlow() ? child->location() : child->location().transposedPoint();
 }
 
 void RenderFlexibleBox::setFlowAwareLocationForChild(RenderBox* child, const LayoutPoint& location)
 {
     if (isHorizontalFlow())
         child->setLocation(location);
     else
         child->setLocation(location.transposedPoint());
 }
 
 LayoutUnit RenderFlexibleBox::mainAxisBorderAndPaddingExtentForChild(RenderBox* child) const
 {
     return isHorizontalFlow() ? child->borderAndPaddingWidth() : child->borderAndPaddingHeight();
 }
 
-LayoutUnit RenderFlexibleBox::mainAxisScrollbarExtentForChild(RenderBox* child) const
-{
-    return isHorizontalFlow() ? child->verticalScrollbarWidth() : child->horizontalScrollbarHeight();
-}
-
 static inline bool preferredMainAxisExtentDependsOnLayout(const Length& flexBasis, bool hasInfiniteLineLength)
 {
     return flexBasis.isAuto() || (flexBasis.isFixed() && !flexBasis.value() && hasInfiniteLineLength);
 }
 
 bool RenderFlexibleBox::childPreferredMainAxisContentExtentRequiresLayout(RenderBox* child, bool hasInfiniteLineLength) const
 {
     return preferredMainAxisExtentDependsOnLayout(flexBasisForChild(child), hasInfiniteLineLength) && hasOrthogonalFlow(child);
 }
 
@@ skipping 755 matching lines @@
             ASSERT(child);
             LayoutUnit lineCrossAxisExtent = lineContexts[lineNumber].crossAxisExtent;
             LayoutUnit originalOffset = lineContexts[lineNumber].crossAxisOffset - crossAxisStartEdge;
             LayoutUnit newOffset = contentExtent - originalOffset - lineCrossAxisExtent;
             adjustAlignmentForChild(child, newOffset - originalOffset);
         }
     }
 }
 
 }