Remove stl_util's deletion function use from content/.

content/browser/download/save_file_manager.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.
 //
 // Objects that handle file operations for saving files, on the file thread.
 //
 // The SaveFileManager owns a set of SaveFile objects, each of which connects
 // with a SaveItem object which belongs to one SavePackage and runs on the file
 // thread for saving data in order to avoid disk activity on either network IO
 // thread or the UI thread. It coordinates the notifications from the network
@@ skipping 192 matching lines @@
                  SavePackageId save_package_id,
                  int render_process_host_id,
                  int render_view_routing_id,
                  int render_frame_routing_id,
                  ResourceContext* context);
   // Call ResourceDispatcherHostImpl's CancelRequest method to execute cancel
   // action in the IO thread.
   void ExecuteCancelSaveRequest(int render_process_id, int request_id);
 
   // A map from save_item_id into SaveFiles.
-  using SaveFileMap =
-      std::unordered_map<SaveItemId, SaveFile*, SaveItemId::Hasher>;
-  SaveFileMap save_file_map_;
+  std::unordered_map<SaveItemId, std::unique_ptr<SaveFile>, SaveItemId::Hasher>
+      save_file_map_;
 
   // Tracks which SavePackage to send data to, called only on UI thread.
   // SavePackageMap maps save item ids to their SavePackage.
-  using SavePackageMap =
-      std::unordered_map<SaveItemId, SavePackage*, SaveItemId::Hasher>;
-  SavePackageMap packages_;
+  std::unordered_map<SaveItemId, SavePackage*, SaveItemId::Hasher> packages_;
 
   DISALLOW_COPY_AND_ASSIGN(SaveFileManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_SAVE_FILE_MANAGER_H_