MDL-27919 also adding a callback to the filepicker when a file is overwritten but a file with the same name. This is not necessary in most cases but is instant and some code may expect a call to the function whether the url and / or file name has changed or not so it can update itself when the file changes.
MDL-27919 also adding a callback to the filepicker when a file is overwritten
but a file with the same name. This is not necessary in most cases but is
instant and some code may expect a call to the function whether the url and / or
file name has changed or not so it can update itself when the file changes.

dilawar/moodle