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

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

 // 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.
 
 #ifndef SpellCheckMarkerListImpl_h
 #define SpellCheckMarkerListImpl_h
 
 #include "core/editing/markers/DocumentMarkerList.h"
 
 namespace blink {
 
 // Nearly-complete implementation of DocumentMarkerList for Spelling or Grammar
 // markers (subclassed by SpellingMarkerListImpl and GrammarMarkerListImpl to
 // implement the MarkerType() method). Markers with touching endpoints are
 // merged on insert. Markers are kept sorted by start offset in order to be able
 // to do this efficiently.
 class CORE_EXPORT SpellCheckMarkerListImpl : public DocumentMarkerList {
  public:
   // DocumentMarkerList implementations
   bool IsEmpty() const final;
 
   void Add(DocumentMarker*) final;
   void Clear() final;
 
   const HeapVector<Member<DocumentMarker>>& GetMarkers() const final;
+  DocumentMarker* FirstMarkerIntersectingRange(unsigned start_offset,
+                                               unsigned end_offset) const final;
   HeapVector<Member<DocumentMarker>> MarkersIntersectingRange(
       unsigned start_offset,
       unsigned end_offset) const final;
 
   bool MoveMarkers(int length, DocumentMarkerList* dst_list) final;
   bool RemoveMarkers(unsigned start_offset, int length) final;
   bool ShiftMarkers(unsigned offset,
                     unsigned old_length,
                     unsigned new_length) final;
 
@@ skipping 17 matching lines @@
                   DocumentMarkerList,
                   list,
                   list->MarkerType() == DocumentMarker::kSpelling ||
                       list->MarkerType() == DocumentMarker::kGrammar,
                   list.MarkerType() == DocumentMarker::kSpelling ||
                       list.MarkerType() == DocumentMarker::kGrammar);
 
 }  // namespace blink
 
 #endif  // SpellCheckMarkerListImpl_h