Apply FINAL to the RenderObject hierarchy.

Source/core/rendering/RenderFlowThread.h

 /*
  * 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 40 matching lines @@
 // flow thread. It will also help in doing the layout. However, it will not render
 // directly to screen. Instead, RenderRegion objects will redirect their paint 
 // and nodeAtPoint methods to this object. Each RenderRegion will actually be a viewPort
 // of the RenderFlowThread.
 
 class RenderFlowThread: public RenderBlock {
 public:
     RenderFlowThread();
     virtual ~RenderFlowThread() { };
     
-    virtual bool isRenderFlowThread() const { return true; }
+    virtual bool isRenderFlowThread() const OVERRIDE FINAL { return true; }
 
-    virtual void layout();
+    virtual void layout() OVERRIDE FINAL;
 
     // Always create a RenderLayer for the RenderFlowThread so that we 
     // can easily avoid drawing the children directly.
-    virtual bool requiresLayer() const { return true; }
+    virtual bool requiresLayer() const OVERRIDE FINAL { return true; }
     
     void removeFlowChildInfo(RenderObject*);
 #ifndef NDEBUG
     bool hasChildInfo(RenderObject* child) const { return child && child->isBox() && m_regionRangeMap.contains(toRenderBox(child)); }
 #endif
 
     virtual void addRegionToThread(RenderRegion*);
     virtual void removeRegionFromThread(RenderRegion*);
     const RenderRegionList& renderRegionList() const { return m_regionList; }
 
-    virtual void updateLogicalWidth() OVERRIDE;
+    virtual void updateLogicalWidth() OVERRIDE FINAL;
     virtual void computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues&) const OVERRIDE;
 
     void paintFlowThreadPortionInRegion(PaintInfo&, RenderRegion*, LayoutRect flowThreadPortionRect, LayoutRect flowThreadPortionOverflowRect, const LayoutPoint&) const;
     bool hitTestFlowThreadPortionInRegion(RenderRegion*, LayoutRect flowThreadPortionRect, LayoutRect flowThreadPortionOverflowRect, const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset) const;
 
     bool hasRegions() const { return m_regionList.size(); }
     // Check if the content is flown into at least a region with region styling rules.
     bool hasRegionsWithStyling() const { return m_hasRegionsWithStyling; }
     void checkRegionsWithStyling();
 
@@ skipping 199 matching lines @@
 };
 
 template <> struct ValueToString<RenderRegion*> {
     static String string(const RenderRegion* value) { return String::format("%p", value); }
 };
 #endif
 
 } // namespace WebCore
 
 #endif // RenderFlowThread_h