Skeleton for app_list on OSX, and refactoring for enable_app_list=1 on OS=="mac".

ui/app_list/test/apps_grid_view_test_api.h

-// 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.
-
-#ifndef UI_APP_LIST_TEST_APPS_GRID_VIEW_TEST_API_H_
-#define UI_APP_LIST_TEST_APPS_GRID_VIEW_TEST_API_H_
-
-#include "base/basictypes.h"
-
-namespace views {
-class View;
-}
-
-namespace app_list {
-
-class AppsGridView;
-
-namespace test {
-
-class AppsGridViewTestApi {
- public:
-  explicit AppsGridViewTestApi(AppsGridView* view);
-  ~AppsGridViewTestApi();
-
-  views::View* GetViewAtModelIndex(int index) const;
-
-  void LayoutToIdealBounds();
-
-  void SetPageFlipDelay(int page_flip_delay_in_ms);
-
- private:
-  AppsGridView* view_;
-
-  DISALLOW_COPY_AND_ASSIGN(AppsGridViewTestApi);
-};
-
-}  // namespace test
-}  // namespace app_list
-
-#endif  // UI_APP_LIST_TEST_APPS_GRID_VIEW_TEST_API_H_