Enable "Hide Extension" option when "Save Link As" on the Mac

content/browser/download/download_item_impl.h

Index: content/browser/download/download_item_impl.h
diff --git a/content/browser/download/download_item_impl.h b/content/browser/download/download_item_impl.h
index 37041cad6b2028a46fdba23722392e4ac0c2a50e..9f93f5114a2522ec6d037da2e1dda5738e8bc080 100644
--- a/content/browser/download/download_item_impl.h
+++ b/content/browser/download/download_item_impl.h
@@ -312,7 +312,8 @@ class CONTENT_EXPORT DownloadItemImpl
       const base::FilePath& target_path,
       TargetDisposition disposition,
       DownloadDangerType danger_type,
-      const base::FilePath& intermediate_path);
+      const base::FilePath& intermediate_path,
+      bool hide_file_extension);
 
   // Callback from file thread when we initialize the DownloadFile.
   void OnDownloadFileInitialized(DownloadInterruptReason result);