Fix infinite spin in auth dialog.

chrome/browser/sync/profile_sync_service.h

 // Copyright (c) 2011 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_SYNC_PROFILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 #pragma once
 
 #include <list>
 #include <string>
@@ skipping 261 matching lines @@
   // This method handles clicks on "sync error" UI, showing the appropriate
   // dialog for the error condition (relogin / enter passphrase).
   virtual void ShowErrorUI();
 
   // Shows the configure screen of the Sync setup wizard. If |sync_everything|
   // is true, shows the corresponding page in the customize screen; otherwise,
   // displays the page that gives the user the ability to select which data
   // types to sync.
   void ShowConfigure(bool sync_everything);
 
-  void ShowSyncSetup(const std::string& sub_page);
+  virtual void ShowSyncSetup(const std::string& sub_page);
   void ShowSyncSetupWithWizard(SyncSetupWizard::State state);
 
   // Pretty-printed strings for a given StatusSummary.
   static std::string BuildSyncStatusSummaryText(
       const browser_sync::SyncBackendHost::StatusSummary& summary);
 
   // Returns true if the SyncBackendHost has told us it's ready to accept
   // changes.
   // [REMARK] - it is safe to call this function only from the ui thread.
   // because the variable is not thread safe and should only be accessed from
@@ skipping 422 matching lines @@
   FailedDatatypesHandler failed_datatypes_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncService);
 };
 
 bool ShouldShowActionOnUI(
     const browser_sync::SyncProtocolError& error);
 
 
 #endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_