Fixes: U4-4852 ContentService can add new permissions but not remove them

src/Umbraco.Core/Persistence/Repositories/ContentRepository.cs

@@ -558,6 +558,12 @@ namespace Umbraco.Core.Persistence.Repositories
             }
         }
 
+        public void ReplaceContentPermissions(EntityPermissionSet permissionSet)
+        {
+            var repo = new PermissionRepository<IContent>(UnitOfWork, _cacheHelper);
+            repo.ReplaceEntityPermissions(permissionSet);
+        }
+
         public IContent GetByLanguage(int id, string language)
         {
             var sql = GetBaseQuery(false);

src/Umbraco.Core/Persistence/Repositories/Interfaces/IContentRepository.cs

@@ -9,6 +9,13 @@ namespace Umbraco.Core.Persistence.Repositories
 {
     public interface IContentRepository : IRepositoryVersionable<int, IContent>
     {
+        /// <summary>
+        /// Used to bulk update the permissions set for a content item. This will replace all permissions
+        /// assigned to an entity with a list of user id & permission pairs.
+        /// </summary>
+        /// <param name="permissionSet"></param>
+        void ReplaceContentPermissions(EntityPermissionSet permissionSet);
+
         /// <summary>
         /// Gets a specific language version of an <see cref="IContent"/>
         /// </summary>

src/Umbraco.Core/Services/ContentService.cs

@@ -74,6 +74,20 @@ namespace Umbraco.Core.Services
             _dataTypeService = dataTypeService;
         }
 
+        /// <summary>
+        /// Used to bulk update the permissions set for a content item. This will replace all permissions
+        /// assigned to an entity with a list of user id & permission pairs.
+        /// </summary>
+        /// <param name="permissionSet"></param>
+        public void ReplaceContentPermissions(EntityPermissionSet permissionSet)
+        {
+            var uow = _uowProvider.GetUnitOfWork();
+            using (var repository = _repositoryFactory.CreateContentRepository(uow))
+            {
+                repository.ReplaceContentPermissions(permissionSet);
+            }
+        }
+
         /// <summary>
         /// Assigns a single permission to the current content item for the specified user ids
         /// </summary>

src/Umbraco.Core/Services/IContentService.cs

@@ -11,6 +11,13 @@ namespace Umbraco.Core.Services
     /// </summary>
     public interface IContentService : IService
     {
+        /// <summary>
+        /// Used to bulk update the permissions set for a content item. This will replace all permissions
+        /// assigned to an entity with a list of user id & permission pairs.
+        /// </summary>
+        /// <param name="permissionSet"></param>
+        void ReplaceContentPermissions(EntityPermissionSet permissionSet);
+
         /// <summary>
         /// Assigns a single permission to the current content item for the specified user ids
         /// </summary>