Allow signin to continue even if sync is disabled by policy.

chrome/browser/signin/signin_ui_util.h

+// Copyright (c) 2013 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_SIGNIN_SIGNIN_UI_UTIL_H_
+#define CHROME_BROWSER_SIGNIN_SIGNIN_UI_UTIL_H_
+
+#include "base/string16.h"
+
+class GlobalError;
+class Profile;
+class SigninManager;
+
+// Utility functions to gather status information from the various signed in
+// services and construct messages suitable for showing in UI.
+namespace signin_ui_util {
+
+// If a signed in service is reporting an error, returns the GlobalError
+// object associated with that service, or NULL if no errors are reported.
+GlobalError* GetSignedInServiceError(Profile* profile);
+
+// Return the label that should be displayed in the signin menu (i.e.
+// "Sign in to Chromium", "Signin Error...", etc).
+string16 GetSigninMenuLabel(Profile* profile);
+
+void GetStatusLabelsForAuthError(const SigninManager& signin_manager,
+                                 string16* status_label,
+                                 string16* link_label);
+
+}  // namespace signin_ui_util
+
+#endif  // CHROME_BROWSER_SIGNIN_SIGNIN_UI_UTIL_H_