[Smart Lock] Auto sign-in snackbar UI.

chrome/browser/ui/android/snackbars/auto_signin_snackbar_controller_helper.h

+// Copyright 2015 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
+
+#ifndef CHROME_BROWSER_UI_ANDROID_SNACKBARS_AUTO_SIGNIN_SNACKBAR_CONTROLLER_HELPER_H_
+#define CHROME_BROWSER_UI_ANDROID_SNACKBARS_AUTO_SIGNIN_SNACKBAR_CONTROLLER_HELPER_H_
+
+#include <jni.h>
+
+#include "base/strings/string16.h"
+
+class TabAndroid;
+
+// Shows an auto sign-in snackbar in order to inform the users that they were
+// automatically signed in to the website.
+void ShowAutoSigninSnackbar(TabAndroid *tab, const base::string16 &username);

[Miguel Garcia, 2015/08/21 10:44:52]

nit, move the & near to base::string16

Also can you document what exactly username is? email? a random string?

[melandory, 2015/08/21 13:56:21]

Done.

+
+// Register native method.
+bool RegisterAutoSigninSnackbarControllerHelper(JNIEnv* env);
+
+#endif // CHROME_BROWSER_UI_ANDROID_SNACKBARS_AUTO_SIGNIN_SNACKBAR_CONTROLLER_HELPER_H_