[WIP] Refactor DocumentMarker

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

Index: third_party/WebKit/Source/core/editing/markers/SpellCheckMarker.h
diff --git a/third_party/WebKit/Source/core/editing/markers/SpellCheckMarker.h b/third_party/WebKit/Source/core/editing/markers/SpellCheckMarker.h
new file mode 100644
index 0000000000000000000000000000000000000000..ef5f45a16629e5da65f1b1d8f0a3a53b4675b3b6
--- /dev/null
+++ b/third_party/WebKit/Source/core/editing/markers/SpellCheckMarker.h
@@ -0,0 +1,44 @@
+// 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 SpellCheckMarker_h
+#define SpellCheckMarker_h
+
+#include "core/editing/markers/DocumentMarker.h"
+
+namespace blink {
+
+class CORE_EXPORT SpellCheckMarker final : public DocumentMarker {
+ public:
+  SpellCheckMarker(DocumentMarker::MarkerType,
+                   unsigned startOffset,
+                   unsigned endOffset,
+                   const String& description);
+
+  // DocumentMarker implementations
+  SpellCheckMarker* clone() const final;
+  MarkerType type() const final;
+
+  // SpellCheckMarker-specific
+  const String& description() const;
+
+ protected:
+  SpellCheckMarker(const SpellCheckMarker&) = default;
+
+ private:
+  DocumentMarker::MarkerType m_type;
+  String m_description;
+};
+
+DEFINE_TYPE_CASTS(SpellCheckMarker,
+                  DocumentMarker,
+                  marker,
+                  marker->type() == DocumentMarker::Spelling ||
+                      marker->type() == DocumentMarker::Grammar,
+                  marker.type() == DocumentMarker::Spelling ||
+                      marker.type() == DocumentMarker::Grammar);
+
+}  // namespace blink
+
+#endif  // SpellCheckMarker_h