Issue 351: Reimplement OAuth2 - Step 2 (Auth PCL - only data types)

Src/GoogleApis.Auth/OAuth2/Responses/TokenResponseException.cs

+/*
+Copyright 2013 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 System;
+
+namespace Google.Apis.Auth.OAuth2.Responses
+{
+/// <summary>
+/// Token response exception which is thrown in case of receiving a token er
ror when an authorization code or an·
+/// access token is expected.
+/// </summary>
+public class TokenResponseException : Exception
+{
+/// <summary>The error information.</summary>
+public TokenErrorResponse Error { get; private set; }
+
+/// <summary>Constructs a new token response exception from the given er
ror.</summary>
+public TokenResponseException(TokenErrorResponse error)
+: base(error.ToString())
+{
+Error = error;
+}
+}
+}