[DMC #17] Make TextMatchMarkers constructible in single step

third_party/WebKit/Source/core/editing/markers/TextMatchMarkerListImplTest.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/editing/EditingTestBase.h"
+#include "core/editing/markers/TextMatchMarker.h"
 
 namespace blink {
 
 class TextMatchMarkerListImplTest : public EditingTestBase {
  protected:
   TextMatchMarkerListImplTest() : marker_list_(new TextMatchMarkerListImpl()) {}
 
   DocumentMarker* CreateMarker(unsigned start_offset, unsigned end_offset) {
-    return new DocumentMarker(start_offset, end_offset,
-                              DocumentMarker::MatchStatus::kInactive);
+    return new TextMatchMarker(start_offset, end_offset,
+                               DocumentMarker::MatchStatus::kInactive);
   }
 
   Persistent<TextMatchMarkerListImpl> marker_list_;
 };
 
 TEST_F(TextMatchMarkerListImplTest, MarkerType) {
   EXPECT_EQ(DocumentMarker::kTextMatch, marker_list_->MarkerType());
 }
 
 TEST_F(TextMatchMarkerListImplTest, Add) {
   EXPECT_EQ(0u, marker_list_->GetMarkers().size());
 
   marker_list_->Add(CreateMarker(0, 1));
   marker_list_->Add(CreateMarker(1, 2));
 
   EXPECT_EQ(2u, marker_list_->GetMarkers().size());
 
   EXPECT_EQ(0u, marker_list_->GetMarkers()[0]->StartOffset());
   EXPECT_EQ(1u, marker_list_->GetMarkers()[0]->EndOffset());
 
   EXPECT_EQ(1u, marker_list_->GetMarkers()[1]->StartOffset());
   EXPECT_EQ(2u, marker_list_->GetMarkers()[1]->EndOffset());
 }
 
 }  // namespace blink