Cleanup variants dirty tracking

src/Umbraco.Core/Models/IContentBase.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using Umbraco.Core.Collections;
 using Umbraco.Core.Models.Entities;
 
 namespace Umbraco.Core.Models
@@ -52,13 +51,13 @@ namespace Umbraco.Core.Models
         string GetCultureName(string culture);
 
         /// <summary>
-        /// Gets the names of the content item.
+        /// Gets culture infos of the content item.
         /// </summary>
         /// <remarks>
         /// <para>Because a dictionary key cannot be <c>null</c> this cannot contain the invariant
         /// culture name, which must be get or set via the <see cref="TreeEntityBase.Name"/> property.</para>
         /// </remarks>
-        IReadOnlyDictionary<string, CultureName> CultureNames { get; }
+        IReadOnlyDictionary<string, ContentCultureInfos> CultureInfos { get; }
 
         /// <summary>
         /// Gets the available cultures.