Remove stl_util's deletion function use from content/.

content/browser/appcache/appcache_backend_impl.h

Index: content/browser/appcache/appcache_backend_impl.h
diff --git a/content/browser/appcache/appcache_backend_impl.h b/content/browser/appcache/appcache_backend_impl.h
index 4585b789038211e31b38e592721bf042f7f0ec3f..e7f9b84eb288987c13a37f758f7c0273c6a08d51 100644
--- a/content/browser/appcache/appcache_backend_impl.h
+++ b/content/browser/appcache/appcache_backend_impl.h
@@ -53,11 +53,11 @@ class CONTENT_EXPORT AppCacheBackendImpl {
 
   // 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
@@ -71,6 +71,8 @@ class CONTENT_EXPORT AppCacheBackendImpl {
   AppCacheFrontend* frontend_;
   int process_id_;
   HostMap hosts_;
+
+  DISALLOW_COPY_AND_ASSIGN(AppCacheBackendImpl);
 };
 
 }  // namespace