I don't know the name or the artist of the song but it is a rock song with the chorus ITS BEEN A LONG TIME COMING

The chorus is one line?
I can't find anything specific. Do you have any more information? Like a total chorus, or more lines from the song, or anything?

Someone else may know by that information though.

"Long Time Comin'" by Bruce Srpingsteen

Sounds like "The Script" to me :) it's called "Rusty Halo"