Disable ProfileKeyedServices on import process by default.

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 <set>
 
 #include "chrome/browser/profiles/profile_manager.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 737 matching lines @@
     if (extensions::ExtensionSystem::Get(profile)->extension_service()) {
       profile->GetHostContentSettingsMap()->RegisterExtensionService(
           extensions::ExtensionSystem::Get(profile)->extension_service());
     }
   }
 #endif
 #if defined(ENABLE_MANAGED_USERS)
   // Initialization needs to happen after extension system initialization (for
   // extension::ManagementPolicy) and InitProfileUserPrefs (for setting the
   // initializing the managed flag if necessary).
-  ManagedUserServiceFactory::GetForProfile(profile)->Init();
+  ManagedUserService* managed_user_service =
+      ManagedUserServiceFactory::GetForProfile(profile);
+  if (managed_user_service)
+    managed_user_service->Init();
 #endif
 }
 
 void ProfileManager::DoFinalInitLogging(Profile* profile) {
   // Count number of extensions in this profile.
   int extension_count = -1;
 #if defined(ENABLE_EXTENSIONS)
   ExtensionService* extension_service = profile->GetExtensionService();
   if (extension_service)
     extension_count = extension_service->GetAppIds().size();
@@ skipping 333 matching lines @@
 ProfileManager::ProfileInfo::ProfileInfo(
     Profile* profile,
     bool created)
     : profile(profile),
       created(created) {
 }
 
 ProfileManager::ProfileInfo::~ProfileInfo() {
   ProfileDestroyer::DestroyProfileWhenAppropriate(profile.release());
 }