[Aura] Polish app list.

chrome/browser/ui/webui/aura/app_list_ui_delegate.h

Index: chrome/browser/ui/webui/aura/app_list_ui_delegate.h
diff --git a/chrome/browser/ui/webui/aura/app_list_ui_delegate.h b/chrome/browser/ui/webui/aura/app_list_ui_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..a23d376da5624e4fe3c7e97b44995dc803b9484c
--- /dev/null
+++ b/chrome/browser/ui/webui/aura/app_list_ui_delegate.h
@@ -0,0 +1,18 @@
+// 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_UI_WEBUI_AURA_APP_LIST_UI_DELEGATE_H_
+#define CHROME_BROWSER_UI_WEBUI_AURA_APP_LIST_UI_DELEGATE_H_
+#pragma once
+
+class AppListUIDelegate {
+ public:
+  // Close AppListUI.
+  virtual void Close() = 0;
+
+  // Invoked when apps are loaded.
+  virtual void OnAppsLoaded() = 0;
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_AURA_APP_LIST_UI_DELEGATE_H_