Upstream Chrome on iOS source code [2/11].

ios/chrome/browser/sessions/test_session_service.mm

Index: ios/chrome/browser/sessions/test_session_service.mm
diff --git a/ios/chrome/browser/sessions/test_session_service.mm b/ios/chrome/browser/sessions/test_session_service.mm
new file mode 100644
index 0000000000000000000000000000000000000000..e3c85480740fd9f3a72f2520f9a0168163bb6619
--- /dev/null
+++ b/ios/chrome/browser/sessions/test_session_service.mm
@@ -0,0 +1,13 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/chrome/browser/sessions/test_session_service.h"
+
+@implementation TestSessionService
+- (void)saveWindow:(SessionWindowIOS*)window
+    forBrowserState:(ios::ChromeBrowserState*)browserState
+        immediately:(BOOL)immediately {
+  [NSKeyedArchiver archivedDataWithRootObject:window];
+}
+@end