[MarkersIntersectingRange #2.05] Add DocumentMarkerList::FirstMarkerIntersectingRange()

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"
 
 namespace blink {
 
@@ skipping 12 matching lines @@
 
 void CompositionMarkerListImpl::Clear() {
   markers_.clear();
 }
 
 const HeapVector<Member<DocumentMarker>>&
 CompositionMarkerListImpl::GetMarkers() const {
   return markers_;
 }
 
+DocumentMarker* CompositionMarkerListImpl::FirstMarkerIntersectingRange(
+    unsigned start_offset,
+    unsigned end_offset) const {
+  return DocumentMarkerListEditor::FirstMarkerIntersectingRange(
+      markers_, start_offset, end_offset);
+}
+
 HeapVector<Member<DocumentMarker>>
 CompositionMarkerListImpl::MarkersIntersectingRange(unsigned start_offset,
                                                     unsigned end_offset) const {
   return DocumentMarkerListEditor::MarkersIntersectingRange(
       markers_, start_offset, end_offset);
 }
 
 bool CompositionMarkerListImpl::MoveMarkers(int length,
                                             DocumentMarkerList* dst_markers_) {
   return DocumentMarkerListEditor::MoveMarkers(&markers_, length, dst_markers_);
@@ skipping 11 matching lines @@
   return DocumentMarkerListEditor::ShiftMarkersContentIndependent(
       &markers_, offset, old_length, new_length);
 }
 
 DEFINE_TRACE(CompositionMarkerListImpl) {
   visitor->Trace(markers_);
   DocumentMarkerList::Trace(visitor);
 }
 
 }  // namespace blink