Migrate signin error messages to the new avatar bubble

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 <vector>
 
 #include "base/strings/string16.h"
 
 class GlobalError;
 class Profile;
 class SigninManagerBase;
 
 // Utility functions to gather status information from the various signed in
 // services and construct messages suitable for showing in UI.
 namespace signin_ui_util {
 
 // The maximum number of times to show the welcome tutorial for an upgrade user.
 const int kUpgradeWelcomeTutorialShowMax = 1;
 
 // 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);
 
 // Returns all errors reported by signed in services.
 std::vector<GlobalError*> GetSignedInServiceErrors(Profile* profile);
 
-// Return the label that should be displayed in the signin menu (i.e.
+// Returns the label that should be displayed in the signin menu (i.e.
 // "Sign in to Chromium", "Signin Error...", etc).
 base::string16 GetSigninMenuLabel(Profile* profile);
 
 void GetStatusLabelsForAuthError(Profile* profile,
                                  const SigninManagerBase& signin_manager,
                                  base::string16* status_label,
                                  base::string16* link_label);
 
+// Initializes signin-related preferences.
 void InitializePrefsForProfile(Profile* profile);
 
+// Shows a learn more page for signin errors.
+void ShowSigninErrorLearnMorePage(Profile* profile);
+
 }  // namespace signin_ui_util
 
 #endif  // CHROME_BROWSER_SIGNIN_SIGNIN_UI_UTIL_H_