Remove stl_util's deletion function use from content/.

content/browser/appcache/appcache_backend_impl.h

 // Copyright (c) 2011 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_APPCACHE_APPCACHE_BACKEND_IMPL_H_
 #define CONTENT_BROWSER_APPCACHE_APPCACHE_BACKEND_IMPL_H_
 
 #include <stdint.h>
 
 #include "base/containers/hash_tables.h"
@@ skipping 35 matching lines @@
                           int64_t cache_document_was_loaded_from);
   bool GetStatusWithCallback(int host_id, const GetStatusCallback& callback,
                              void* callback_param);
   bool StartUpdateWithCallback(int host_id, const StartUpdateCallback& callback,
                                void* callback_param);
   bool SwapCacheWithCallback(int host_id, const SwapCacheCallback& callback,
                              void* callback_param);
 
   // Returns a pointer to a registered host. The backend retains ownership.
   AppCacheHost* GetHost(int host_id) {
-    HostMap::iterator it = hosts_.find(host_id);
-    return (it != hosts_.end()) ? (it->second) : NULL;
+    auto it = hosts_.find(host_id);
+    return (it != hosts_.end()) ? (it->second.get()) : nullptr;
   }
 
-  typedef base::hash_map<int, AppCacheHost*> HostMap;
+  typedef base::hash_map<int, std::unique_ptr<AppCacheHost>> HostMap;
   const HostMap& hosts() { return hosts_; }
 
   // Methods to support cross site navigations. Hosts are transferred
   // from process to process accordingly, deparented from the old
   // processes backend and reparented to the new.
   std::unique_ptr<AppCacheHost> TransferHostOut(int host_id);
   void TransferHostIn(int new_host_id, std::unique_ptr<AppCacheHost> host);
 
  private:
   AppCacheServiceImpl* service_;
   AppCacheFrontend* frontend_;
   int process_id_;
   HostMap hosts_;
+
+  DISALLOW_COPY_AND_ASSIGN(AppCacheBackendImpl);
 };
 
 }  // namespace
 
 #endif  // CONTENT_BROWSER_APPCACHE_APPCACHE_BACKEND_IMPL_H_