Simplify the usage of PositionWithAffinity

third_party/WebKit/Source/core/editing/PositionWithAffinity.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file./*
 
 #ifndef PositionWithAffinity_h
 #define PositionWithAffinity_h
 
 #include "core/CoreExport.h"
 #include "core/editing/Position.h"
 #include "core/editing/TextAffinity.h"
@@ skipping 18 matching lines @@
 
   // Returns true if both |this| and |other| is null or both |m_position|
   // and |m_affinity| equal.
   bool operator==(const PositionWithAffinityTemplate& other) const;
   bool operator!=(const PositionWithAffinityTemplate& other) const {
     return !operator==(other);
   }
 
   bool isNotNull() const { return m_position.isNotNull(); }
   bool isNull() const { return m_position.isNull(); }
+  bool isOrphan() const { return m_position.isOrphan(); }
+  bool isConnected() const { return m_position.isConnected(); }
+
+  Node* anchorNode() const { return m_position.anchorNode(); }
+  Document* document() const { return m_position.document(); }
 
   DEFINE_INLINE_TRACE() { visitor->trace(m_position); }
 
  private:
   PositionTemplate<Strategy> m_position;
   TextAffinity m_affinity;
 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT
     PositionWithAffinityTemplate<EditingStrategy>;
@@ skipping 24 matching lines @@
 }
 
 CORE_EXPORT std::ostream& operator<<(std::ostream&,
                                      const PositionWithAffinity&);
 CORE_EXPORT std::ostream& operator<<(std::ostream&,
                                      const PositionInFlatTreeWithAffinity&);
 
 }  // namespace blink
 
 #endif  // PositionWithAffinity_h