[Aura] Implement views-based applist.

ui/aura_shell/examples/example_factory.h

 // 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 UI_AURA_SHELL_EXAMPLES_EXAMPLE_FACTORY_H_
 #define UI_AURA_SHELL_EXAMPLES_EXAMPLE_FACTORY_H_
 #pragma once
 
+#include "ui/aura_shell/shell_delegate.h"
+
 namespace views {
 class View;
 }
 
 namespace aura_shell {
+
+class AppListModel;
+class AppListViewDelegate;
+
 namespace examples {
 
 void CreatePointyBubble(views::View* anchor_view);
 
 void CreateLockScreen();
 
 // Creates a window showing samples of commonly used widgets.
 void CreateWidgetsWindow();
 
+void BuildAppListModel(AppListModel* model);
+
+AppListViewDelegate* CreateAppListViewDelegate();
+
+void CreateAppList(const gfx::Rect& bounds,
+                   const ShellDelegate::SetWidgetCallback& callback);
+
 }  // namespace examples
 }  // namespace aura_shell
 
 #endif  // UI_AURA_SHELL_EXAMPLES_EXAMPLE_FACTORY_H_