update subtitle interface

MediaBrowser.Controller/Chapters/ChapterResponse.cs

@@ -0,0 +1,19 @@
+using MediaBrowser.Model.Chapters;
+using System.Collections.Generic;
+
+namespace MediaBrowser.Controller.Chapters
+{
+    public class ChapterResponse
+    {
+        /// <summary>
+        /// Gets or sets the chapters.
+        /// </summary>
+        /// <value>The chapters.</value>
+        public List<RemoteChapterInfo> Chapters { get; set; }
+
+        public ChapterResponse()
+        {
+            Chapters = new List<RemoteChapterInfo>();
+        }
+    }
+}