I painted my car a couple of years ago and had to remove the chrome strip from the drip rail. It is actually two strips of chrome. One runs up the A pillar to about the middle of the front door. THe other runs from that point back and ends with a black rubber plug at the rear most end of the drip rail. I cannot remember if the two chrome strips overlap requiring removal of the front strip to get at the back, but I think they only butt together.
If they do overlap, and if I remember correctly, the front strip is removed by taking off the black plastic strip that runs up the A pillar between the pillar and the windshield. It is held on by three screws.
The drip rail chrome strip is a friction or crimp fit. I used a wood block and a hammer. There is a rubber plug at the rear of the chrome strip that is used to attach it to the drip rail. THis pulls off. Next angle the edge of the block along the chrome strip and gently tap. This will detach the chrome strip from the drip rail.
My mistake was using too short a block of wood (about 3") and going from front to back on the rear chrome strip because the rear of the strip bent (neither right nor left but longitudinally like the curl in a dog's tail) and I had a great deal of difficulty pressing it back on the drip rail. It might be better to start with the block and hammer just rear of where the chrome strip descends on the C pillar.
In summary, hit the damn thing with a wood block and a really big hammer. Good luck.