Index: Src/GoogleApis.Auth.WP81/OAuth2/SerializableWebAuthResult.cs
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+/*
+Copyright 2014 Google Inc
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+using Windows.Security.Authentication.Web;
+
+namespace Google.Apis.Auth.OAuth2
+{
+    /// <summary>
+    /// Contains the WebAuthenticationResult data. WebAuthenticationResult doesn't have an empty constructor, and as a
+    /// result it can't be deserialized.
+    /// </summary>
+    public class SerializableWebAuthResult
+    {
+        public static string Name = "authorization_result";
+
+        /// <summary>Gets or sets the the protocol data when the operation successfully completes.</summary>
+        public string ResponseData { get; set; }
+        /// <summary>Gets or sets the HTTP error code when ResponseStatus is equal to ErrorHttp.</summary>
+        public uint ResponseErrorDetail { get; set; }
+        /// <summary>Gets or sets the status of the asynchronous operation when it completes.</summary>
+        public WebAuthenticationStatus ResponseStatus { get; set; }
+
+        /// <summary>Empty default constructor.</summary>
+        public SerializableWebAuthResult() { }
+
+        /// <summary>Constructs a new instance of the class and set its properties by the specified result.</summary>
+        public SerializableWebAuthResult(WebAuthenticationResult result)
+        {
+            this.ResponseData = result.ResponseData;
+            this.ResponseErrorDetail = result.ResponseErrorDetail;
+            this.ResponseStatus = result.ResponseStatus;
+        }
+    }
+}
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