Implement large cursors in Mushrome.

services/ui/public/interfaces/cursor/cursor_struct_traits.h

Index: services/ui/public/interfaces/cursor/cursor_struct_traits.h
diff --git a/services/ui/public/interfaces/cursor/cursor_struct_traits.h b/services/ui/public/interfaces/cursor/cursor_struct_traits.h
index e7e8fa21248963bf7a78db58f9901f7a91dd1635..8c29aa35ef6eda0b28071724ec3114a3e9798e7b 100644
--- a/services/ui/public/interfaces/cursor/cursor_struct_traits.h
+++ b/services/ui/public/interfaces/cursor/cursor_struct_traits.h
@@ -7,6 +7,7 @@
 
 #include "services/ui/public/interfaces/cursor/cursor.mojom-shared.h"
 #include "ui/base/cursor/cursor_data.h"
+#include "ui/base/cursor/cursor_type.h"
 
 namespace mojo {
 
@@ -16,6 +17,12 @@ struct EnumTraits<ui::mojom::CursorType, ui::CursorType> {
   static bool FromMojom(ui::mojom::CursorType input, ui::CursorType* out);
 };
 
+template <>
+struct EnumTraits<ui::mojom::CursorSize, ui::CursorSize> {
+  static ui::mojom::CursorSize ToMojom(ui::CursorSize input);
+  static bool FromMojom(ui::mojom::CursorSize input, ui::CursorSize* out);
+};
+
 template <>
 struct StructTraits<ui::mojom::CursorDataDataView, ui::CursorData> {
   static ui::CursorType cursor_type(const ui::CursorData& c) {