[DMC #5.55v2] Add DocumentMarkerList::MarkerType()

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

 // Copyright 2017 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 GenericDocumentMarkerListImpl_h
 #define GenericDocumentMarkerListImpl_h
 
 #include "core/editing/markers/DocumentMarkerList.h"
 
 namespace blink {
 
 class RenderedDocumentMarker;
 
 // Temporary implementation of DocumentMarkerList that can handle
 // DocumentMarkers of all MarkerTypes. This will be removed once we have
 // specialized implementations for every MarkerType.
 class GenericDocumentMarkerListImpl final : public DocumentMarkerList {
  public:
-  GenericDocumentMarkerListImpl() = default;
+  GenericDocumentMarkerListImpl(DocumentMarker::MarkerType);
 
   // DocumentMarkerList implementations
+  DocumentMarker::MarkerType MarkerType() const;
+
   bool IsEmpty() const final;
 
   void Add(DocumentMarker*) final;
   void Clear() final;
 
   const HeapVector<Member<RenderedDocumentMarker>>& GetMarkers() const final;
 
   bool MoveMarkers(int length, DocumentMarkerList* dst_list) final;
   bool RemoveMarkers(unsigned start_offset, int length) final;
   bool RemoveMarkersUnderWords(const String& node_text,
                                const Vector<String>& words) final;
   bool ShiftMarkers(unsigned offset,
                     unsigned old_length,
                     unsigned new_length) final;
 
   DECLARE_TRACE();
 
  private:
+  DocumentMarker::MarkerType marker_type_;
   HeapVector<Member<RenderedDocumentMarker>> markers_;
 
   DISALLOW_COPY_AND_ASSIGN(GenericDocumentMarkerListImpl);
 };
 
 }  // namespace blink
 
 #endif  // GenericDocumentMarkerListImpl_h