Simplify the usage of PositionWithAffinity

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

Index: third_party/WebKit/Source/core/editing/PositionWithAffinity.h
diff --git a/third_party/WebKit/Source/core/editing/PositionWithAffinity.h b/third_party/WebKit/Source/core/editing/PositionWithAffinity.h
index f18eb6cbe2b0c19619d28232ae578b2f0e6bc5f8..d53dc0d288cbcb15d8e8ad49a5cceb7c3842b045 100644
--- a/third_party/WebKit/Source/core/editing/PositionWithAffinity.h
+++ b/third_party/WebKit/Source/core/editing/PositionWithAffinity.h
@@ -36,6 +36,11 @@ class CORE_TEMPLATE_CLASS_EXPORT PositionWithAffinityTemplate {
 
   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); }