Do not initialize event routers in the Profile Import process.

chrome/browser/extensions/extension_service.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/extension_service.h"
 
 #include <algorithm>
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 652 matching lines @@
   // profile is in the process of being deleted.
 
   ProviderCollection::const_iterator i;
   for (i = external_extension_providers_.begin();
        i != external_extension_providers_.end(); ++i) {
     ExternalExtensionProviderInterface* provider = i->get();
     provider->ServiceShutdown();
   }
 }
 
+void ExtensionService::InitEventRoutersAfterImport() {
+  registrar_.Add(this, chrome::NOTIFICATION_IMPORT_FINISHED,
+                 Source<Profile>(profile_));
+}
+
 void ExtensionService::InitEventRouters() {
   if (event_routers_initialized_)
     return;
 
   history_event_router_.reset(new ExtensionHistoryEventRouter());
   history_event_router_->ObserveProfile(profile_);
   ExtensionAccessibilityEventRouter::GetInstance()->ObserveProfile(profile_);
   browser_event_router_.reset(new ExtensionBrowserEventRouter(profile_));
   browser_event_router_->Init();
   preference_event_router_.reset(new ExtensionPreferenceEventRouter(profile_));
@@ skipping 2000 matching lines @@
     case chrome::NOTIFICATION_PREF_CHANGED: {
       std::string* pref_name = Details<std::string>(details).ptr();
       if (*pref_name == prefs::kExtensionInstallAllowList ||
           *pref_name == prefs::kExtensionInstallDenyList) {
         CheckAdminBlacklist();
       } else {
         NOTREACHED() << "Unexpected preference name.";
       }
       break;
     }
+    case chrome::NOTIFICATION_IMPORT_FINISHED: {
+      registrar_.Remove(this, chrome::NOTIFICATION_IMPORT_FINISHED,
+                        Source<Profile>(profile_));
+      InitEventRouters();
+      break;
+    }
 
     default:
       NOTREACHED() << "Unexpected notification type.";
   }
 }
 
 bool ExtensionService::HasApps() const {
   return !GetAppIds().empty();
 }
 
@@ skipping 109 matching lines @@
 
 ExtensionService::NaClModuleInfoList::iterator
     ExtensionService::FindNaClModule(const GURL& url) {
   for (NaClModuleInfoList::iterator iter = nacl_module_list_.begin();
        iter != nacl_module_list_.end(); ++iter) {
     if (iter->url == url)
       return iter;
   }
   return nacl_module_list_.end();
 }