Re-enable extensions auto-update.

chrome/browser/profile.cc

 // Copyright (c) 2006-2008 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/profile.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 542 matching lines @@
   user_script_master_ = new UserScriptMaster(
       g_browser_process->file_thread()->message_loop(),
       script_dir);
   extensions_service_ = new ExtensionsService(
       this,
       CommandLine::ForCurrentProcess(),
       GetPrefs(),
       GetPath().AppendASCII(ExtensionsService::kInstallDirectoryName),
       MessageLoop::current(),
       g_browser_process->file_thread()->message_loop(),
-      false);
+      true);
 
   extensions_service_->Init();
 
   // Load any extensions specified with --load-extension.
   if (command_line->HasSwitch(switches::kLoadExtension)) {
     std::wstring path_string =
         command_line->GetSwitchValue(switches::kLoadExtension);
     FilePath path = FilePath::FromWStringHack(path_string);
     extensions_service_->LoadExtension(path);
 
@@ skipping 589 matching lines @@
 
 void ProfileImpl::StopCreateSessionServiceTimer() {
   create_session_service_timer_.Stop();
 }
 
 #ifdef CHROME_PERSONALIZATION
 ProfilePersonalization* ProfileImpl::GetProfilePersonalization() {
   return personalization_.get();
 }
 #endif