Do not initialize sync or policy on import process.

chrome/browser/sync/profile_sync_service_factory.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/sync/profile_sync_service_factory.h"
 
 #include "base/command_line.h"
 #include "base/memory/singleton.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/autofill/personal_data_manager_factory.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/extensions/extension_system_factory.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/password_manager/password_store_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
+#include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/sessions/tab_restore_service_factory.h"
 #include "chrome/browser/signin/about_signin_internals_factory.h"
 #include "chrome/browser/signin/signin_manager.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/sync/profile_sync_components_factory_impl.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/themes/theme_service_factory.h"
 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 #include "chrome/browser/webdata/web_data_service_factory.h"
 #include "chrome/common/pref_names.h"
 
 // static
 ProfileSyncServiceFactory* ProfileSyncServiceFactory::GetInstance() {
   return Singleton<ProfileSyncServiceFactory>::get();
 }
 
 // static
 ProfileSyncService* ProfileSyncServiceFactory::GetForProfile(
     Profile* profile) {
   if (!ProfileSyncService::IsSyncEnabled())
     return NULL;
 
+  // Do not start sync on the import process.
+  if (ProfileManager::IsImportProcess(*CommandLine::ForCurrentProcess()))
+    return NULL;
+
   return static_cast<ProfileSyncService*>(
       GetInstance()->GetServiceForProfile(profile, true));
 }
 
 // static
 ProfileSyncServiceBase* ProfileSyncServiceBase::FromBrowserContext(
     content::BrowserContext* context) {
   return ProfileSyncServiceFactory::GetForProfile(
       static_cast<Profile*>(context));
 }
@@ skipping 57 matching lines @@
 
   pss->factory()->RegisterDataTypes(pss);
   pss->Initialize();
   return pss;
 }
 
 // static
 bool ProfileSyncServiceFactory::HasProfileSyncService(Profile* profile) {
   return GetInstance()->GetServiceForProfile(profile, false) != NULL;
 }