Remove LayoutIndicator which is basically dead code

Source/core/rendering/RenderObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 13 matching lines @@
  */
 
 #ifndef RenderObject_h
 #define RenderObject_h
 
 #include "core/dom/Element.h"
 #include "core/dom/Position.h"
 #include "core/dom/StyleEngine.h"
 #include "core/fetch/ImageResourceClient.h"
 #include "core/rendering/CompositingState.h"
-#include "core/rendering/LayoutIndicator.h"
 #include "core/rendering/PaintPhase.h"
 #include "core/rendering/RenderObjectChildList.h"
 #include "core/rendering/ScrollAlignment.h"
 #include "core/rendering/SubtreeLayoutScope.h"
 #include "core/rendering/style/RenderStyle.h"
 #include "core/rendering/style/StyleInheritedData.h"
 #include "platform/geometry/FloatQuad.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/transforms/TransformationMatrix.h"
 
@@ skipping 539 matching lines @@
     // Returns true if this renderer is rooted, and optionally returns the hosting view (the root of the hierarchy).
     bool isRooted(RenderView** = 0) const;
 
     Node* node() const
     {
         return isAnonymous() ? 0 : m_node;
     }
 
     Node* nonPseudoNode() const
     {
-        ASSERT(!LayoutIndicator::inLayout());
         return isPseudoElement() ? 0 : node();
     }
 
     // FIXME: Why does RenderWidget need this?
     void clearNode() { m_node = 0; }
 
     // Returns the styled node that caused the generation of this renderer.
     // This is the same as node() except for renderers of :before and :after
     // pseudo elements for which their parent node is returned.
     Node* generatingNode() const { return isPseudoElement() ? node()->parentOrShadowHostNode() : node(); }
@@ skipping 822 matching lines @@
 void showTree(const WebCore::RenderObject*);
 void showLineTree(const WebCore::RenderObject*);
 void showRenderTree(const WebCore::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h