[DMC #24] Add SpellingMarker and GrammarMarker (subclasses of 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..156883d6c506d3e5c358a44263f75d1a0838c155
--- /dev/null
+++ b/third_party/WebKit/Source/core/editing/markers/SpellCheckMarker.h
@@ -0,0 +1,35 @@
+// 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 : public DocumentMarker {
+ public:
+  SpellCheckMarker(DocumentMarker::MarkerType,
+                   unsigned start_offset,
+                   unsigned end_offset,
+                   const String& description);
+
+  const String& Description() const;
+
+ private:
+  String description_;

[yosin_UTC9, 2017/05/29 05:13:48]

nit: s/String/const String/

+};
+
+DEFINE_TYPE_CASTS(SpellCheckMarker,
+                  DocumentMarker,
+                  marker,
+                  marker->GetType() == DocumentMarker::kSpelling ||
+                      marker->GetType() == DocumentMarker::kGrammar,
+                  marker.GetType() == DocumentMarker::kSpelling ||
+                      marker.GetType() == DocumentMarker::kGrammar);
+
+}  // namespace blink
+
+#endif