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

chrome/browser/download/download_target_determiner_delegate.h

Index: chrome/browser/download/download_target_determiner_delegate.h
diff --git a/chrome/browser/download/download_target_determiner_delegate.h b/chrome/browser/download/download_target_determiner_delegate.h
index f2aeec6f03625bf71cb9a3a1461f2bd68d700f88..a8875d2805a7cc0db00c4677cfe6564ff9877c1f 100644
--- a/chrome/browser/download/download_target_determiner_delegate.h
+++ b/chrome/browser/download/download_target_determiner_delegate.h
@@ -47,8 +47,8 @@ class DownloadTargetDeterminerDelegate {
   //    selection, then this parameter will be the empty path. On Chrome OS,
   //    this path may contain virtual mount points if the user chose a virtual
   //    path (e.g. Google Drive).
-  typedef base::Callback<void(const base::FilePath& virtual_path)>
-  FileSelectedCallback;
+  typedef base::Callback<void(const base::FilePath& virtual_path,
+      bool hide_file_extension)> FileSelectedCallback;
 
   // Callback to be invoked when DetermineLocalPath() completes. The argument
   // should be the determined local path. It should be non-empty on success. If