Move rendering/RenderLayer* to layout/

Source/core/rendering/RenderMultiColumnSet.cpp

 /*
  * Copyright (C) 2012 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 551 matching lines @@
         clippedRect.intersect(translatedDirtyRect);
         if (clippedRect.isEmpty())
             continue;
 
         // Something does need to paint in this column. Make a fragment now and supply the physical translation
         // offset and the clip rect for the column with that offset applied.
         LayerFragment fragment;
         fragment.paginationOffset = translationOffset;
 
         LayoutRect flippedFlowThreadOverflowPortion(flowThreadOverflowPortion);
-        // Flip it into more a physical (RenderLayer-style) rectangle.
+        // Flip it into more a physical (Layer-style) rectangle.
         flowThread->flipForWritingMode(flippedFlowThreadOverflowPortion);
         fragment.paginationClip = flippedFlowThreadOverflowPortion;
         fragments.append(fragment);
     }
 }
 
 void RenderMultiColumnSet::addOverflowFromChildren()
 {
     unsigned colCount = actualColumnCount();
     if (!colCount)
@@ skipping 41 matching lines @@
 
 void RenderMultiColumnSet::detachRegion()
 {
     if (m_flowThread) {
         m_flowThread->removeRegionFromThread(this);
         m_flowThread = 0;
     }
 }
 
 }