Start consolidating cross-port file selection code into ui/base/dialogs.

chrome/browser/ui/webui/extensions/pack_extension_handler.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/ui/webui/extensions/pack_extension_handler.h"
 
+#include "chrome/browser/chrome_select_file_policy.h"
 #include "chrome/browser/extensions/extension_creator.h"
 #include "base/bind.h"
 #include "base/utf_string_conversions.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #include "content/public/browser/web_ui.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 PackExtensionHandler::PackExtensionHandler() {
@@ skipping 156 matching lines @@
                 IDS_EXTENSION_PACK_DIALOG_KEY_FILE_TYPE_DESCRIPTION));
         info.include_all_files = true;
     file_type_index = 1;
   } else {
     NOTREACHED();
   }
 
   load_extension_dialog_ = SelectFileDialog::Create(this);
   load_extension_dialog_->SelectFile(
       type, select_title, FilePath(), &info, file_type_index,
-      FILE_PATH_LITERAL(""), web_ui()->GetWebContents(),
-      web_ui()->GetWebContents()->GetView()->GetTopLevelNativeWindow(), NULL);
+      FILE_PATH_LITERAL(""),
+      ChromeSelectFilePolicy::DisplayInfobarCallback(
+          web_ui()->GetWebContents()),
+      web_ui()->GetWebContents()->GetView()->GetTopLevelNativeWindow(),
+      NULL);
 }
 
 void PackExtensionHandler::ShowAlert(const std::string& message) {
   ListValue arguments;
   arguments.Append(Value::CreateStringValue(message));
   web_ui()->CallJavascriptFunction("PackExtensionOverlay.showError", arguments);
 }