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

third_party/WebKit/Source/core/editing/markers/CompositionMarkerListImpl.cpp

 // 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.
 
 #include "core/editing/markers/CompositionMarkerListImpl.h"
 
 #include "core/editing/markers/DocumentMarkerListEditor.h"
 #include "core/editing/markers/RenderedDocumentMarker.h"
 
 namespace blink {
 
+DocumentMarker::MarkerType CompositionMarkerListImpl::MarkerType() const {
+  return DocumentMarker::kComposition;
+}
+
 bool CompositionMarkerListImpl::IsEmpty() const {
   return markers_.IsEmpty();
 }
 
 void CompositionMarkerListImpl::Add(DocumentMarker* marker) {
   DocumentMarkerListEditor::AddMarkerWithoutMergingOverlapping(&markers_,
                                                                marker);
 }
 
 void CompositionMarkerListImpl::Clear() {
@@ skipping 32 matching lines @@
   return DocumentMarkerListEditor::ShiftMarkers(&markers_, offset, old_length,
                                                 new_length);
 }
 
 DEFINE_TRACE(CompositionMarkerListImpl) {
   visitor->Trace(markers_);
   DocumentMarkerList::Trace(visitor);
 }
 
 }  // namespace blink