Introduce DEFINE_RENDER_OBJECT_TYPE_CASTS to replace manual toRenderFoo, and use it

Source/core/rendering/RenderTable.h

Index: Source/core/rendering/RenderTable.h
diff --git a/Source/core/rendering/RenderTable.h b/Source/core/rendering/RenderTable.h
index d21fdd696c6c4c1c6ca40603ae44eb2a0fc7868e..be11b6760e44d1de0360d332c1779d4ffba16125 100644
--- a/Source/core/rendering/RenderTable.h
+++ b/Source/core/rendering/RenderTable.h
@@ -350,20 +350,7 @@ inline RenderTableSection* RenderTable::topSection() const
     return m_foot;
 }
 
-inline RenderTable* toRenderTable(RenderObject* object)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isTable());
-    return static_cast<RenderTable*>(object);
-}
-
-inline const RenderTable* toRenderTable(const RenderObject* object)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isTable());
-    return static_cast<const RenderTable*>(object);
-}
-
-// This will catch anyone doing an unnecessary cast.
-void toRenderTable(const RenderTable*);
+DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderTable, isTable());
 
 } // namespace WebCore