Add DocumentMarker::kActiveSuggestion MarkerType

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

Index: third_party/WebKit/Source/core/editing/markers/MarkerWithFormatting.h
diff --git a/third_party/WebKit/Source/core/editing/markers/MarkerWithFormatting.h b/third_party/WebKit/Source/core/editing/markers/MarkerWithFormatting.h
new file mode 100644
index 0000000000000000000000000000000000000000..4d8a83a55b908714622204288417e6b998bc6d9c
--- /dev/null
+++ b/third_party/WebKit/Source/core/editing/markers/MarkerWithFormatting.h
@@ -0,0 +1,45 @@
+// 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 MarkerWithFormatting_h
+#define MarkerWithFormatting_h
+
+#include "core/editing/markers/DocumentMarker.h"
+
+namespace blink {
+
+// An abstract subclass of DocumentMarker to be subclassed by DocumentMarkers
+// that should be renderable with customizable formatting.
+class CORE_EXPORT MarkerWithFormatting : public DocumentMarker {
+ public:
+  enum class Thickness { kThin, kThick };
+
+  MarkerWithFormatting(unsigned start_offset,
+                       unsigned end_offset,
+                       Color underline_color,
+                       Thickness,
+                       Color background_color);
+
+  // MarkerWithFormatting-specific
+  Color UnderlineColor() const;
+  bool IsThick() const;
+  Color BackgroundColor() const;
+
+ private:
+  const Color underline_color_;
+  const Color background_color_;
+  const Thickness thickness_;
+};
+
+bool CORE_EXPORT IsMarkerWithFormatting(const DocumentMarker&);
+
+DEFINE_TYPE_CASTS(MarkerWithFormatting,
+                  DocumentMarker,
+                  marker,
+                  IsMarkerWithFormatting(*marker),
+                  IsMarkerWithFormatting(marker));
+
+}  // namespace blink
+
+#endif