Remove stl_util's deletion function use from content/.

content/browser/download/download_manager_impl.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 CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_MANAGER_IMPL_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_MANAGER_IMPL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 120 matching lines @@
       const Referrer& referrer,
       ResourceContext* resource_context,
       bool is_content_initiated,
       int render_process_id,
       int render_view_route_id,
       int render_frame_route_id,
       bool do_not_prompt_for_login);
 
  private:
   using DownloadSet = std::set<DownloadItem*>;
-  using DownloadMap = std::unordered_map<uint32_t, DownloadItemImpl*>;
   using DownloadGuidMap = std::unordered_map<std::string, DownloadItemImpl*>;
   using DownloadItemImplVector = std::vector<DownloadItemImpl*>;
   using DownloadRemover = base::Callback<bool(const DownloadItemImpl*)>;
 
   // For testing.
   friend class DownloadManagerTest;
   friend class DownloadTest;
 
   void StartDownloadWithId(
       std::unique_ptr<DownloadCreateInfo> info,
@@ skipping 54 matching lines @@
 
   // Factory for the creation of download files.
   std::unique_ptr<DownloadFileFactory> file_factory_;
 
   // |downloads_| is the owning set for all downloads known to the
   // DownloadManager.  This includes downloads started by the user in
   // this session, downloads initialized from the history system, and
   // "save page as" downloads.
   // TODO(asanka): Remove this container in favor of downloads_by_guid_ as a
   // part of http://crbug.com/593020.
-  DownloadMap downloads_;
+  std::unordered_map<uint32_t, std::unique_ptr<DownloadItemImpl>> downloads_;
 
   // Same as the above, but maps from GUID to download item. Note that the
   // container is case sensitive. Hence the key needs to be normalized to
   // upper-case when inserting new elements here. Fortunately for us,
   // DownloadItemImpl already normalizes the string GUID.
   DownloadGuidMap downloads_by_guid_;
 
   // True if the download manager has been initialized and requires a shutdown.
   bool shutdown_needed_;
 
@@ skipping 12 matching lines @@
       url_downloaders_;
 
   base::WeakPtrFactory<DownloadManagerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadManagerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_MANAGER_IMPL_H_