Index: Src/GoogleApis.Auth/OAuth2/GoogleAuthorizationCodeFlow.cs
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+/*
+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;
+
+using Google.Apis.Auth.OAuth2.Requests;
+
+namespace Google.Apis.Auth.OAuth2
+{
+    /// <summary>
+    /// Google specific authorization code flow which inherits from <seealso cref="AuthorizationCodeFlow"/>.
+    /// </summary>
+    public class GoogleAuthorizationCodeFlow : AuthorizationCodeFlow
+    {
+        /// <summary>Constructs a new Google authorization code flow.</summary>
+        public GoogleAuthorizationCodeFlow(AuthorizationCodeFlow.Initializer initializer)
+            : base(initializer)
+        {
+        }
+
+        public override AuthorizationCodeRequestUrl CreateAuthorizationCodeRequest(string redirectUri)
+        {
+            return new GoogleAuthorizationCodeRequestUrl(new Uri(AuthorizationServerUrl))
+            {
+                ClientId = ClientSecrets.ClientId,
+                Scope = string.Join(" ", Scopes),
+                RedirectUri = redirectUri
+            };
+        }
+
+        /// <summary>An initializer class for Google authorization code flow. </summary>
+        public new class Initializer : AuthorizationCodeFlow.Initializer
+        {
+            /// <summary>
+            /// Constructs a new initializer. Sets Authorization server URL to 
+            /// <seealso cref="GoogleAuthConsts.AuthorizationUrl"/>, and Token server URL to 
+            /// <seealso cref="GoogleAuthConsts.TokenUrl"/>.
+            /// </summary>
+            public Initializer()
+                : base(GoogleAuthConsts.AuthorizationUrl, GoogleAuthConsts.TokenUrl)
+            {
+            }
+        }
+    }
+}