Handle the case where IAttachmentExecute::Save() deletes a downloaded file.

content/browser/download/base_file_linux.cc

Index: content/browser/download/base_file_linux.cc
diff --git a/content/browser/download/base_file_linux.cc b/content/browser/download/base_file_linux.cc
index 7f8b71747992bcf9c463eb3b8c090bddd3503b26..88e7f7a34208b1c563a77a222eb8dd31b9199e66 100644
--- a/content/browser/download/base_file_linux.cc
+++ b/content/browser/download/base_file_linux.cc
@@ -7,9 +7,10 @@
 #include "content/browser/download/file_metadata_linux.h"
 #include "content/public/browser/browser_thread.h"
 
-void BaseFile::AnnotateWithSourceInformation() {
+content::DownloadInterruptReason BaseFile::AnnotateWithSourceInformation() {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
   DCHECK(!detached_);
 
   content::AddOriginMetadataToFile(full_path_, source_url_, referrer_url_);
+  return content::DOWNLOAD_INTERRUPT_REASON_NONE;
 }