Add DocumentMarker::kActiveSuggestion MarkerType

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

Index: third_party/WebKit/Source/core/editing/markers/ActiveSuggestionMarker.h
diff --git a/third_party/WebKit/Source/core/editing/markers/ActiveSuggestionMarker.h b/third_party/WebKit/Source/core/editing/markers/ActiveSuggestionMarker.h
new file mode 100644
index 0000000000000000000000000000000000000000..c8a47323b5b1453c45c77ee0db000df425306d0d
--- /dev/null
+++ b/third_party/WebKit/Source/core/editing/markers/ActiveSuggestionMarker.h
@@ -0,0 +1,40 @@
+// 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 ActiveSuggestionMarker_h
+#define ActiveSuggestionMarker_h
+
+#include "core/editing/markers/MarkerWithFormatting.h"
+
+namespace blink {
+
+// A subclass of DocumentMarker used to store information specific to
+// composition markers. We store what color to display the underline (possibly
+// transparent), whether the underline should be thick or not, and what
+// background color should be used under the marked text (also possibly
+// transparent).
+class CORE_EXPORT ActiveSuggestionMarker final : public MarkerWithFormatting {
+ public:
+  ActiveSuggestionMarker(unsigned start_offset,
+                         unsigned end_offset,
+                         Color underline_color,
+                         Thickness,
+                         Color background_color);
+
+  // DocumentMarker implementations
+  MarkerType GetType() const;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ActiveSuggestionMarker);
+};
+
+DEFINE_TYPE_CASTS(ActiveSuggestionMarker,
+                  DocumentMarker,
+                  marker,
+                  marker->GetType() == DocumentMarker::kActiveSuggestion,
+                  marker.GetType() == DocumentMarker::kActiveSuggestion);
+
+}  // namespace blink
+
+#endif