Refactor app list max folder logic.

ui/app_list/views/apps_grid_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_APPS_GRID_VIEW_H_
 #define UI_APP_LIST_VIEWS_APPS_GRID_VIEW_H_
 
 #include <set>
 #include <string>
 
@@ skipping 383 matching lines @@
 
   // Hide a given view temporarily without losing (mouse) events and / or
   // changing the size of it. If |immediate| is set the change will be
   // immediately applied - otherwise it will change gradually.
   // If |hide| is set the view will get hidden, otherwise it gets shown.
   void SetViewHidden(AppListItemView* view, bool hide, bool immediate);
 
   // Whether the folder drag-and-drop UI should be enabled.
   bool EnableFolderDragDropUI();
 
-  // Whether target specified by |drap_target| can accept more items to be
-  // dropped into it.
-  bool CanDropIntoTarget(const Index& drop_target) const;
-
   // Returns the size of the entire tile grid.
   gfx::Size GetTileGridSize() const;
 
   // Returns the slot number which the given |point| falls into or the closest
   // slot if |point| is outside the page's bounds.
   Index GetNearestTileIndexForPoint(const gfx::Point& point) const;
 
   // Gets the bounds of the tile located at |slot| on the current page.
   gfx::Rect GetExpectedTileBounds(int slot) const;
 
@@ skipping 154 matching lines @@
 
   // True if the drag_view_ item is a folder item being dragged for reparenting.
   bool dragging_for_reparent_item_;
 
   DISALLOW_COPY_AND_ASSIGN(AppsGridView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_APPS_GRID_VIEW_H_