Revert of Delete dead signin code (SigninGlobalError)

chrome/browser/signin/signin_ui_util.h

Index: chrome/browser/signin/signin_ui_util.h
diff --git a/chrome/browser/signin/signin_ui_util.h b/chrome/browser/signin/signin_ui_util.h
index 7e1a5dc54565ed4426418efe3e7d0aeb9c561af4..943573801cea8cfaa043424e26a3c56c86530733 100644
--- a/chrome/browser/signin/signin_ui_util.h
+++ b/chrome/browser/signin/signin_ui_util.h
@@ -20,6 +20,17 @@
 // 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);
+
+// 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,