extracted provider manager. took more off the kernel

MediaBrowser.Controller/Providers/MediaInfo/FFMpegVideoImageProvider.cs

@@ -59,6 +59,11 @@ namespace MediaBrowser.Controller.Providers.MediaInfo
             return false;
         }
 
+        /// <summary>
+        /// The true task result
+        /// </summary>
+        protected static readonly Task<bool> TrueTaskResult = Task.FromResult(true);
+
         /// <summary>
         /// Fetches metadata and returns true or false indicating if any work that requires persistence was done
         /// </summary>
@@ -66,7 +71,7 @@ namespace MediaBrowser.Controller.Providers.MediaInfo
         /// <param name="force">if set to <c>true</c> [force].</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task{System.Boolean}.</returns>
-        protected override Task<bool> FetchAsyncInternal(BaseItem item, bool force, CancellationToken cancellationToken)
+        public override Task<bool> FetchAsync(BaseItem item, bool force, CancellationToken cancellationToken)
         {
             if (string.IsNullOrEmpty(item.PrimaryImagePath))
             {