Speculative fix for Mac quarantine crash

chrome/browser/download/download_file.h

Index: chrome/browser/download/download_file.h
diff --git a/chrome/browser/download/download_file.h b/chrome/browser/download/download_file.h
index 4d2336b27f3ef9df8ca7cdcf3100d05be4febba9..63fb1e749fc4e68ec67202f9aebcd3a4037af5a0 100644
--- a/chrome/browser/download/download_file.h
+++ b/chrome/browser/download/download_file.h
@@ -99,6 +99,9 @@ class DownloadFile {
   // Rename the download file. Returns 'true' if the rename was successful.
   bool Rename(const FilePath& full_path);
 
+  // Informs the OS that this file came from the internet.
+  void AnnotateWithSourceInformation();
+
   // Accessors.
   int64 bytes_so_far() const { return bytes_so_far_; }
   int id() const { return id_; }