Is there a way to get these changes into gTile upstream?

(1) the developers of gTile would have to accept this to be merged (2) This extension does not detect Hide Top Bar/related extensions, so if that was not installed, this extension would not be helpful (3) I would like to put in more work to make this extension better detect the real screen boundaries in the future if this were to be merged upstream. I think as it is now, it is best to keep this as a separate extension.

There is an effort to fork gtile into a community project. Please try to get your code into that project. https://github.com/gTile/gTile/issues/1