Experimental app list: Added "All apps" button on start page.

ui/app_list/views/all_apps_tile_item_view.h

+// Copyright 2014 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_VIEWS_ALL_APPS_TILE_ITEM_VIEW_H_
+#define UI_APP_LIST_VIEWS_ALL_APPS_TILE_ITEM_VIEW_H_
+
+#include <vector>
+
+#include "ui/app_list/views/tile_item_view.h"
+
+namespace app_list {
+
+class ContentsView;
+
+// A tile item for the "All apps" button on the start page.
+class AllAppsTileItemView : public TileItemView {
+ public:
+  AllAppsTileItemView(ContentsView* contents_view);
+
+  ~AllAppsTileItemView() override;
+
+  // TileItemView overrides:
+  void ButtonPressed(views::Button* sender, const ui::Event& event) override;
+
+ private:
+  ContentsView* contents_view_;
+};
+
+}  // namespace app_list
+
+#endif  // UI_APP_LIST_VIEWS_ALL_APPS_TILE_ITEM_VIEW_H_