Convert //ash from scoped_ptr to std::unique_ptr

ash/shelf/shelf_item_delegate_manager.cc

 // Copyright 2013 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.
 
 #include "ash/shelf/shelf_item_delegate_manager.h"
 
 #include "ash/shelf/shelf_item_delegate.h"
 #include "ash/shelf/shelf_model.h"
 #include "ash/shell.h"
 #include "base/logging.h"
@@ skipping 18 matching lines @@
   observers_.AddObserver(observer);
 }
 
 void ShelfItemDelegateManager::RemoveObserver(
     ShelfItemDelegateManagerObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void ShelfItemDelegateManager::SetShelfItemDelegate(
     ShelfID id,
-    scoped_ptr<ShelfItemDelegate> item_delegate) {
+    std::unique_ptr<ShelfItemDelegate> item_delegate) {
   // If another ShelfItemDelegate is already registered for |id|, we assume
   // that this request is replacing ShelfItemDelegate for |id| with
   // |item_delegate|.
   RemoveShelfItemDelegate(id);
 
   FOR_EACH_OBSERVER(ShelfItemDelegateManagerObserver,
                     observers_,
                     OnSetShelfItemDelegate(id, item_delegate.get()));
 
   id_to_item_delegate_map_[id] = item_delegate.release();
@@ skipping 24 matching lines @@
                                                 const ShelfItem& old_item) {}
 
 void ShelfItemDelegateManager::RemoveShelfItemDelegate(ShelfID id) {
   if (id_to_item_delegate_map_.find(id) != id_to_item_delegate_map_.end()) {
     delete id_to_item_delegate_map_[id];
     id_to_item_delegate_map_.erase(id);
   }
 }
 
 }  // namespace ash