Add accessibility info to app list items and allow them to be focused.

ash/app_list/app_list_item_view.h

Index: ash/app_list/app_list_item_view.h
diff --git a/ash/app_list/app_list_item_view.h b/ash/app_list/app_list_item_view.h
index e085b429892c7856cc599549577a9476cfec9c75..3bbe848023179a3197f966ee546b38738b3d96d1 100644
--- a/ash/app_list/app_list_item_view.h
+++ b/ash/app_list/app_list_item_view.h
@@ -79,6 +79,7 @@ class ASH_EXPORT AppListItemView : public views::CustomButton,
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual void GetAccessibleState(ui::AccessibleViewState* state);
 
   // views::ContextMenuController overrides:
   virtual void ShowContextMenuForView(views::View* source,
@@ -92,6 +93,7 @@ class ASH_EXPORT AppListItemView : public views::CustomButton,
   AppListModelView* list_model_view_;
   views::ImageView* icon_;
   DropShadowLabel* title_;
+  string16 accessible_name_;
 
   scoped_ptr<views::MenuRunner> context_menu_runner_;