Rendering API cleanup

Source/core/rendering/RenderTableCol.h

Index: Source/core/rendering/RenderTableCol.h
diff --git a/Source/core/rendering/RenderTableCol.h b/Source/core/rendering/RenderTableCol.h
index 2cb1bbc84ffb019a133e914dd33bc7942092ce2d..92f8409d109e32673c2c4c106555e5678031755d 100644
--- a/Source/core/rendering/RenderTableCol.h
+++ b/Source/core/rendering/RenderTableCol.h
@@ -39,7 +39,6 @@ public:
     virtual void trace(Visitor*) OVERRIDE;
 
     RenderObject* firstChild() const { ASSERT(children() == virtualChildren()); return children()->firstChild(); }
-    RenderObject* lastChild() const { ASSERT(children() == virtualChildren()); return children()->lastChild(); }
 
     // If you have a RenderTableCol, use firstChild or lastChild instead.
     void slowFirstChild() const WTF_DELETED_FUNCTION;
@@ -51,7 +50,6 @@ public:
     void clearPreferredLogicalWidthsDirtyBits();
 
     unsigned span() const { return m_span; }
-    void setSpan(unsigned span) { m_span = span; }
 
     bool isTableColumnGroupWithColumnChildren() { return firstChild(); }
     bool isTableColumn() const { return style()->display() == TABLE_COLUMN; }