Do not initialize sync or policy on import process.

chrome/browser/sync/profile_sync_service_factory.cc

Index: chrome/browser/sync/profile_sync_service_factory.cc
diff --git a/chrome/browser/sync/profile_sync_service_factory.cc b/chrome/browser/sync/profile_sync_service_factory.cc
index 0000819ae3071e545f6a2077013ed42140c1c1c3..79e0888a2640bd206da011252c705605c17b0233 100644
--- a/chrome/browser/sync/profile_sync_service_factory.cc
+++ b/chrome/browser/sync/profile_sync_service_factory.cc
@@ -15,6 +15,7 @@
 #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"
@@ -38,6 +39,10 @@ ProfileSyncService* ProfileSyncServiceFactory::GetForProfile(
   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));
 }