When deleting a profile, only call back when a new profile is created.

chrome/browser/profiles/profile_manager.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/profiles/profile_manager.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 690 matching lines @@
   // profile has been loaded, we must pre-load a next one.
   const std::string last_used_profile =
       g_browser_process->local_state()->GetString(prefs::kProfileLastUsed);
   if (last_used_profile == profile_dir.BaseName().MaybeAsASCII() ||
       last_used_profile == GetGuestProfilePath().BaseName().MaybeAsASCII()) {
     CreateProfileAsync(last_non_supervised_profile_path,
                        base::Bind(&ProfileManager::OnNewActiveProfileLoaded,
                                   base::Unretained(this),
                                   profile_dir,
                                   last_non_supervised_profile_path,
-                                  callback),
+                                  CreateCallback()),
                        base::string16(),
                        base::string16(),
                        std::string());
     return;
   }
 #endif  // defined(OS_MACOSX)
 
   FinishDeletingProfile(profile_dir, last_non_supervised_profile_path);
 }
 
@@ skipping 670 matching lines @@
   }
 
   FinishDeletingProfile(profile_to_delete_path, new_active_profile_path);
   if (!original_callback.is_null())
     original_callback.Run(loaded_profile, status);
 }
 
 ProfileManagerWithoutInit::ProfileManagerWithoutInit(
     const base::FilePath& user_data_dir) : ProfileManager(user_data_dir) {
 }