Disable ProfileKeyedServices on import process by default.

chrome/browser/extensions/activity_log.cc

 // 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.
 
 #include "chrome/browser/extensions/activity_log.h"
 
 #include <set>
 #include <vector>
 #include "base/command_line.h"
 #include "base/json/json_string_value_serializer.h"
@@ skipping 120 matching lines @@
 
 ProfileKeyedService* ActivityLogFactory::BuildServiceInstanceFor(
     Profile* profile) const {
   return new ActivityLog(profile);
 }
 
 bool ActivityLogFactory::ServiceRedirectedInIncognito() const {
   return true;
 }
 
+bool ActivityLogFactory::ServiceIsNULLOnImportProcess() const {
+  return false;
+}
+
 // ActivityLog
 
 // Use GetInstance instead of directly creating an ActivityLog.
 ActivityLog::ActivityLog(Profile* profile) {
   // enable-extension-activity-logging and enable-extension-activity-ui
   log_activity_to_stdout_ = CommandLine::ForCurrentProcess()->
       HasSwitch(switches::kEnableExtensionActivityLogging);
   log_activity_to_ui_ = CommandLine::ForCurrentProcess()->
       HasSwitch(switches::kEnableExtensionActivityUI);
 
@@ skipping 256 matching lines @@
       return "content_script";
     case ActivityLog::ACTIVITY_EVENT_DISPATCH:
       return "event_dispatch";
     default:
       NOTREACHED();
       return "";
   }
 }
 
 }  // namespace extensions