Create CrxInstaller directly in WebstoreInstaller

chrome/browser/extensions/extension_service.cc

 // Copyright (c) 2013 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 <iterator>
 #include <set>
 
@@ skipping 606 matching lines @@
 
   if (extension && extension->was_installed_by_oem())
     creation_flags |= Extension::WAS_INSTALLED_BY_OEM;
 
   if (extension && extension->is_ephemeral())
     creation_flags |= Extension::IS_EPHEMERAL;
 
   installer->set_creation_flags(creation_flags);
 
   installer->set_delete_source(file_ownership_passed);
-  installer->set_download_url(download_url);
   installer->set_install_cause(extension_misc::INSTALL_CAUSE_UPDATE);
   installer->InstallCrx(extension_path);
 
   if (out_crx_installer)
     *out_crx_installer = installer.get();
 
   return true;
 }
 
 void ExtensionService::ReloadExtension(const std::string extension_id) {
@@ skipping 2018 matching lines @@
 void ExtensionService::UnloadAllExtensionsInternal() {
   profile_->GetExtensionSpecialStoragePolicy()->RevokeRightsForAllExtensions();
 
   registry_->ClearAll();
   system_->runtime_data()->ClearAll();
 
   // TODO(erikkay) should there be a notification for this?  We can't use
   // EXTENSION_UNLOADED since that implies that the extension has been disabled
   // or uninstalled.
 }