Upstream Chrome on iOS source code [3/11].

ios/chrome/browser/ui/authentication/authentication_ui_util.h

+// Copyright 2014 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 IOS_CHROME_BROWSER_UI_AUTHENTICATION_AUTHENTICATION_UI_UTIL_H_
+#define IOS_CHROME_BROWSER_UI_AUTHENTICATION_AUTHENTICATION_UI_UTIL_H_
+
+#import <UIKit/UIKit.h>
+
+#include "base/ios/block_types.h"
+
+@class AlertCoordinator;
+
+namespace ios_internal {
+
+// Returns the sign in alert coordinator for |error|. |dismissAction| is called
+// when the dialog is dismissed (the user taps on the Ok button) or cancelled
+// (the alert coordinator is cancelled programatically).
+AlertCoordinator* ErrorCoordinator(NSError* error,
+                                   ProceduralBlock dismissAction,
+                                   UIViewController* viewController);
+
+// Returns the sign in alert coordinator for |error|, with no associated
+// action. An action should be added before starting it.
+AlertCoordinator* ErrorCoordinatorNoItem(NSError* error,
+                                         UIViewController* viewController);
+
+}  // namespace ios_internal
+
+#endif  // IOS_CHROME_BROWSER_UI_AUTHENTICATION_AUTHENTICATION_UI_UTIL_H_