Add tiles to the experimental app list start page.

ui/app_list/views/tile_item_view.h

Index: ui/app_list/views/tile_item_view.h
diff --git a/ui/app_list/views/tile_item_view.h b/ui/app_list/views/tile_item_view.h
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index 0000000000000000000000000000000000000000..9e20b5df57e8c3c52783334dc41f8ac2ea751034
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+++ b/ui/app_list/views/tile_item_view.h
@@ -0,0 +1,51 @@
+// 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_TILE_ITEM_VIEW_H_
+#define UI_APP_LIST_VIEWS_TILE_ITEM_VIEW_H_
+
+#include "ui/views/controls/button/button.h"
+#include "ui/views/controls/button/custom_button.h"
+
+namespace views {
+class ImageView;
+class Label;
+}
+
+namespace app_list {
+
+class AppListItem;
+
+// The view for a tile in the app list on the start/search page.
+class TileItemView : public views::CustomButton, public views::ButtonListener {
+ public:
+  TileItemView();
+  virtual ~TileItemView();
+
+  void SetAppListItem(AppListItem* item);
+
+ private:
+  class TileItemBackground;
+
+  // Overridden from views::View:
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
+
+  // Overridden from views::ButtonListener:
+  virtual void ButtonPressed(views::Button* sender,
+                             const ui::Event& event) OVERRIDE;
+
+  // Owned by the model provided by the AppListViewDelegate.
+  AppListItem* item_;
+
+  views::ImageView* icon_;  // Owned by views hierarchy.
+  views::Label* title_;     // Owned by views hierarchy.
+
+  TileItemBackground* background_;
+
+  DISALLOW_COPY_AND_ASSIGN(TileItemView);
+};
+
+}  // namespace app_list
+
+#endif  // UI_APP_LIST_VIEWS_TILE_ITEM_VIEW_H_