Remove stl_util's deletion function use from content/.

content/browser/download/save_file_manager.h

Index: content/browser/download/save_file_manager.h
diff --git a/content/browser/download/save_file_manager.h b/content/browser/download/save_file_manager.h
index 56aa46d06de04038977a56ec3e9db4e347addfc1..d6fd762b6891c5d9c71ca343eab0db55d48d92b3 100644
--- a/content/browser/download/save_file_manager.h
+++ b/content/browser/download/save_file_manager.h
@@ -210,15 +210,12 @@ class CONTENT_EXPORT SaveFileManager
   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);
 };