Adding some interface implementation for tests

Author: uabarahona

src/Antiforgery/test/DefaultAntiforgeryTokenStoreTest.cs

@@ -491,6 +491,11 @@ public void Append(string key, string value)
                 throw new NotImplementedException();
             }
 
+            public void Append(IDictionary<string, string> keyValuePairs, CookieOptions options)
+            {
+                throw new NotImplementedException();
+            }
+
             public void Delete(string key, CookieOptions options)
             {
                 throw new NotImplementedException();

src/Mvc/Mvc.ViewFeatures/test/CookieTempDataProviderTest.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -416,6 +416,19 @@ IEnumerator IEnumerable.GetEnumerator()
             {
                 return GetEnumerator();
             }
+
+            public void Append(IDictionary<string, string> keyValuePairs, CookieOptions options)
+            {
+                foreach (var keyValuePair in keyValuePairs)
+                {
+                    _cookies[keyValuePair.Key] = new CookieInfo()
+                    {
+                        Key = keyValuePair.Key,
+                        Value = keyValuePair.Value,
+                        Options = options
+                    };
+                }
+            }
         }
 
         private CookieTempDataProvider GetProvider(IDataProtector dataProtector = null, CookieTempDataProviderOptions options = null)
@@ -501,4 +514,4 @@ public override byte[] Serialize(IDictionary<string, object> values)
             }
         }
     }
-}
+}

src/Security/CookiePolicy/test/CookieChunkingTests.cs

@@ -31,7 +31,7 @@ public void AppendLargeCookie_WithOptions_Appended()
             {
                 Domain = "foo.com",
                 HttpOnly = true,
-                SameSite = SameSiteMode.Strict,
+                SameSite = Http.SameSiteMode.Strict,
                 Path = "/bar",
                 Secure = true,
                 Expires = now.AddMinutes(5),