Refactor DocumentMarkerController::Add*Marker() methods

third_party/WebKit/Source/core/editing/markers/DocumentMarkerController.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
@@ skipping 93 matching lines @@
   void ShowMarkers() const;
 #endif
 
   // SynchronousMutationObserver
   void DidUpdateCharacterData(CharacterData*,
                               unsigned offset,
                               unsigned old_length,
                               unsigned new_length) final;
 
  private:
-  void AddMarker(Node*, DocumentMarker*);
+  void AddMarkerInternal(
+      const EphemeralRange&,
+      std::function<DocumentMarker*(int, int)> create_marker_from_offsets);
+  void AddMarkerToNode(Node*, DocumentMarker*);
   void AddSpellCheckMarker(const Position& start,
                            const Position& end,
                            DocumentMarker::MarkerType,
                            const String& description = g_empty_string);
 
   using MarkerLists = HeapVector<Member<DocumentMarkerList>,
                                  DocumentMarker::kMarkerTypeIndexesCount>;
   using MarkerMap = HeapHashMap<WeakMember<const Node>, Member<MarkerLists>>;
   static Member<DocumentMarkerList>& ListForType(MarkerLists*,
                                                  DocumentMarker::MarkerType);
@@ skipping 12 matching lines @@
   const Member<const Document> document_;
 };
 
 }  // namespace blink
 
 #ifndef NDEBUG
 void showDocumentMarkers(const blink::DocumentMarkerController*);
 #endif
 
 #endif  // DocumentMarkerController_h