"File revert" action does not exist in 1.2.x and above

Summary:

In the release notes of 1.2 it is stated that all verbs have been removed and replaced by actions. But it seems the file revert action is not implemented.

Steps to reproduce:

You can check the source code here. The code for file_revert is commented.

What happened?

The file_revert action is not implemented.

What should have happened?

The revert action should be implemented.

Version info

1.2.x and 1.3-dev