[New Multicolumn] Actual support for layout of column-span:all.

Source/core/rendering/RenderFlowThread.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 350 matching lines @@
             }
             currentBlock->flipForWritingMode(blockRect);
         }
         blockRect.moveBy(currentBlockLocation);
         currentBlock = containerBlock;
     }
 
     return currentBlock->isHorizontalWritingMode() ? blockRect.y() : blockRect.x();
 }
 
-void RenderFlowThread::RegionSearchAdapter::collectIfNeeded(const MultiColumnSetInterval& interval)
+void RenderFlowThread::MultiColumnSetSearchAdapter::collectIfNeeded(const MultiColumnSetInterval& interval)
 {
     if (m_result)
         return;
     if (interval.low() <= m_offset && interval.high() > m_offset)
         m_result = interval.data();
 }
 
 CurrentRenderFlowThreadMaintainer::CurrentRenderFlowThreadMaintainer(RenderFlowThread* renderFlowThread)
     : m_renderFlowThread(renderFlowThread)
     , m_previousRenderFlowThread(0)
 {
     if (!m_renderFlowThread)
         return;
     RenderView* view = m_renderFlowThread->view();
     m_previousRenderFlowThread = view->flowThreadController()->currentRenderFlowThread();
     view->flowThreadController()->setCurrentRenderFlowThread(m_renderFlowThread);
 }
 
 CurrentRenderFlowThreadMaintainer::~CurrentRenderFlowThreadMaintainer()
 {
     if (!m_renderFlowThread)
         return;
     RenderView* view = m_renderFlowThread->view();
     ASSERT(view->flowThreadController()->currentRenderFlowThread() == m_renderFlowThread);
     view->flowThreadController()->setCurrentRenderFlowThread(m_previousRenderFlowThread);
 }
 
 
 } // namespace blink