[DMC #5] Add SpellCheckMarkerListImpl

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

Index: third_party/WebKit/Source/core/editing/markers/DocumentMarkerListEditor.h
diff --git a/third_party/WebKit/Source/core/editing/markers/DocumentMarkerListEditor.h b/third_party/WebKit/Source/core/editing/markers/DocumentMarkerListEditor.h
index 5edeca3c7580ea1c1ae96ef49203c52cdebeb1b4..df299a90ee3a63f48e469bd3ea975f0e195b6685 100644
--- a/third_party/WebKit/Source/core/editing/markers/DocumentMarkerListEditor.h
+++ b/third_party/WebKit/Source/core/editing/markers/DocumentMarkerListEditor.h
@@ -17,7 +17,6 @@ class DocumentMarkerListEditor {
  public:
   using MarkerList = HeapVector<Member<RenderedDocumentMarker>>;
 
-  static void AddMarkerAndMergeOverlapping(MarkerList*, const DocumentMarker*);
   static void AddMarkerWithoutMergingOverlapping(MarkerList*,
                                                  const DocumentMarker*);
 
@@ -29,11 +28,6 @@ class DocumentMarkerListEditor {
   // Returns true if a marker was removed, false otherwise.
   static bool RemoveMarkers(MarkerList*, unsigned start_offset, int length);
 
-  // Returns true if a marker was removed, false otherwise.
-  static bool RemoveMarkersUnderWords(MarkerList*,
-                                      const String& node_text,
-                                      const Vector<String>& words);
-
   // Returns true if a marker was shifted or removed, false otherwise.
   static bool ShiftMarkers(MarkerList*,
                            unsigned offset,