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  Update remaining NodeTraversal / ElementTraversal methods to take references
Update remaining NodeTraversal / ElementTraversal methods to take references in
argument instead of pointers as their implementation assumes the pointers are
non-null. This makes the code look safer.
As a side effect, RenderCounter API was also updated to use more references.
R=adamk
Committed:  https://src.chromium.org/viewvc/blink?view=rev&revision=162040
   
  
  
  
  
   
  
  
  
  
    
  
  
    
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            Source/core/dom/ElementTraversal.h
          
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            Source/core/dom/Node.cpp
          
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            Source/core/dom/NodeTraversal.h
          
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            Source/core/dom/NodeTraversal.cpp
          
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            Source/core/dom/Text.cpp
          
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            Source/core/rendering/CounterNode.h
          
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            Source/core/rendering/CounterNode.cpp
          
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            Source/core/rendering/RenderCounter.h
          
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            Source/core/rendering/RenderCounter.cpp
          
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            Source/core/rendering/RenderListItem.cpp
          
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            Source/core/rendering/RenderObject.cpp
          
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