Drag and drop between app list and launcher - First patch

ash/launcher/launcher_model.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 ASH_LAUNCHER_LAUNCHER_MODEL_H_
 #define ASH_LAUNCHER_LAUNCHER_MODEL_H_
 
 #include "ash/ash_export.h"
 #include "ash/launcher/launcher_types.h"
 #include "base/basictypes.h"
@@ skipping 27 matching lines @@
 
   // Moves the item at |index| to |target_index|. |target_index| is in terms
   // of the model *after* the item at |index| is removed.
   void Move(int index, int target_index);
 
   // Resets the item at the specified index. The item maintains its existing
   // id and type.
   void Set(int index, const LauncherItem& item);
 
   // Returns the index of the item by id.
-  int ItemIndexByID(int id) const;
+  int ItemIndexByID(LauncherID id) const;
 
   // Returns the index of the first panel or the index where the first panel
   // would go if there are no panels.
   int FirstPanelIndex() const;
 
   // Returns the id assigned to the next item added.
   LauncherID next_id() const { return next_id_; }
 
   // Returns a reserved id which will not be used by the |LauncherModel|.
   LauncherID reserve_external_id() { return next_id_++; }
@@ skipping 23 matching lines @@
   LauncherItems items_;
   Status status_;
   ObserverList<LauncherModelObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(LauncherModel);
 };
 
 }  // namespace ash
 
 #endif  // ASH_LAUNCHER_LAUNCHER_MODEL_H_