[Win] App launcher drag/drop.

ui/app_list/views/app_list_item_view.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_VIEWS_APP_LIST_ITEM_VIEW_H_
 #define UI_APP_LIST_VIEWS_APP_LIST_ITEM_VIEW_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 30 matching lines @@
   virtual ~AppListItemView();
 
   void SetIconSize(const gfx::Size& size);
 
   void Prerender();
 
   AppListItemModel* model() const { return model_; }
 
   const views::Label* title() const { return title_; }
 
+  gfx::ImageSkia GetDragImage();
+
  private:
   enum UIState {
     UI_STATE_NORMAL,    // Normal UI (icon + label)
     UI_STATE_DRAGGING,  // Dragging UI (scaled icon only)
   };
 
   // Get icon from model and schedule background processing.
   void UpdateIcon();
 
   void SetUIState(UIState state);
@@ skipping 54 matching lines @@
 
   // A timer to defer showing drag UI when mouse is pressed.
   base::OneShotTimer<AppListItemView> mouse_drag_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListItemView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_APP_LIST_ITEM_VIEW_H_