Firefox overlay is seen opened even if Import Overlay is Cancelled.

chrome/browser/importer/external_process_importer_host.cc

 // Copyright (c) 2012 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/importer/external_process_importer_host.h"
 
 #include "base/bind.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/importer/external_process_importer_client.h"
@@ skipping 71 matching lines @@
     importer::ImportItem item) {
   if (observer_)
     observer_->ImportItemEnded(item);
 }
 
 void ExternalProcessImporterHost::NotifyImportEnded() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   firefox_lock_.reset();
   if (observer_)
     observer_->ImportEnded();
+  importer::HideImportLockDialog();
   delete this;
 }
 
 ExternalProcessImporterHost::~ExternalProcessImporterHost() {
   if (installed_bookmark_observer_) {
     DCHECK(profile_);
     BookmarkModelFactory::GetForBrowserContext(profile_)->RemoveObserver(this);
   }
 }
 
@@ skipping 103 matching lines @@
     if (!writer_->TemplateURLServiceIsLoaded()) {
       TemplateURLService* model =
           TemplateURLServiceFactory::GetForProfile(profile_);
       template_service_subscription_ = model->RegisterOnLoadedCallback(
           base::Bind(&ExternalProcessImporterHost::OnTemplateURLServiceLoaded,
                      weak_ptr_factory_.GetWeakPtr()));
       model->Load();
     }
   }
 }