[DMC #17] Make TextMatchMarkers constructible in single step

third_party/WebKit/Source/core/editing/markers/TextMatchMarkerListImpl.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/TextMatchMarkerListImpl.h"
 
 #include "core/dom/Node.h"
 #include "core/dom/Range.h"
 #include "core/editing/EphemeralRange.h"
 #include "core/editing/markers/DocumentMarkerListEditor.h"
 #include "core/editing/markers/TextMatchMarker.h"
 #include "third_party/WebKit/Source/core/editing/VisibleUnits.h"
 
 namespace blink {
 
 DocumentMarker::MarkerType TextMatchMarkerListImpl::MarkerType() const {
   return DocumentMarker::kTextMatch;
 }
 
 bool TextMatchMarkerListImpl::IsEmpty() const {
   return markers_.IsEmpty();
 }
 
 void TextMatchMarkerListImpl::Add(DocumentMarker* marker) {
-  DocumentMarkerListEditor::AddMarkerWithoutMergingOverlapping(
-      &markers_, TextMatchMarker::Create(*marker));
+  DocumentMarkerListEditor::AddMarkerWithoutMergingOverlapping(&markers_,
+                                                               marker);
 }
 
 void TextMatchMarkerListImpl::Clear() {
   markers_.clear();
 }
 
 const HeapVector<Member<DocumentMarker>>& TextMatchMarkerListImpl::GetMarkers()
     const {
   return markers_;
 }
@@ skipping 58 matching lines @@
     // range.
     if (marker.StartOffset() >= end_offset)
       break;
     marker.SetIsActiveMatch(active);
     doc_dirty = true;
   }
   return doc_dirty;
 }
 
 }  // namespace blink