I'm going from memory here on this one, so please forgive me if I miss a step or two...
1) The upper rear interior panel will need to be removed. To make it easier, you may find you need to remove the upper Torx T50 seatbelt bolt at the "B" pillar. You will also find you need to remove the upper seat back to access the screws covered up by the seat back. This necessitates removing the rear seat bottom first, then the rear seat back via more Torx T50 bolts at the bottom of the seat back. With the seat back and bottom out of the way, you'll have full access to the side panels. Remove the upper for sure, and possibly the lower for easier access.
***BE CAREFUL removing the upper interior panel. There is a flimsy foam seal that usually sticks to the glass that is supposed to be attached to trim that goes around the window opening on the interior plastic. This seal usually tears and falls apart due to the age of our cars. It's not replaceable in stock form at this time, so just be prepared.***
2) With the rear panels removed, you will see metal clips at the top, bottom and sides pressing against the glass. They are held in with 7mm screws, remove these also.
3) With those out, the glass will be held and sealed in place with a gooey black sealant, carefully apply pressure to the outside of the glass inwards while trimming the sealer with a sharp knife. Don't drop the glass when it's about to come out!
4) With the glass out, you'll likely find that you've got to do some clean up of the sealer. What you're looking to do is expose the screws that hold the chrome trim on from inside the car.
NOTE: this is where my memory is a bit fuzzy. I can't remember exactly if there are additional screws holding the hard black weatherstrip seal (that's visible from outside the car) to the chrome trim. I don't think there is, as I think it just clips into the chrome, but I could be wrong.
Lacquer thinner works well for dissolving the sealant, but be prepared for a bit of a mess. Disposable gloves and lots of rags or paper towels are almost a necessity.
5) Once the screws are exposed, remove them and gently and carefully work the chrome trim up, off and out of the opening. This may or may not be easy depending on the condition of the car.
Take your time, go slow, and don't force anything. If it seems like there's something still holding it in, there probably is. Just try and find it.
It's a fairly easy straightforward process, can be accomplished with simple hand tools.
If you find you get stuck or need additional help, feel free to ask here or PM me, I'm happy to help.
Donovan