Do not initialize event routers in the Profile Import process.

chrome/browser/extensions/extension_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 225 matching lines @@
   // being upgraded.
   bool IsBeingUpgraded(const Extension* extension);
   void SetBeingUpgraded(const Extension* extension, bool value);
 
   // Getter for the extension's runtime data PropertyBag.
   PropertyBag* GetPropertyBag(const Extension* extension);
 
   // Initialize and start all installed extensions.
   void Init();
 
+  // Initialize the event routers after import has finished.
+  void InitEventRoutersAfterImport();
+
   // Start up the extension event routers.
   void InitEventRouters();
 
   // Look up an extension by ID.  Does not include terminated
   // extensions.
   virtual const Extension* GetExtensionById(
       const std::string& id, bool include_disabled) const OVERRIDE;
 
   // Looks up a terminated (crashed) extension by ID.
   const Extension* GetTerminatedExtension(const std::string& id) const;
@@ skipping 532 matching lines @@
   SyncBundle extension_sync_bundle_;
 
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsWithUnlimtedStorage);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsAndCheckStorageProtection);
   DISALLOW_COPY_AND_ASSIGN(ExtensionService);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_