Need help identifying part for 2006 tacoma

I have a 2006 toyota tacoma. I recently had the windshieldreplaced. The technician pointed out that I have a missing part below thewindshield on the driver's side of the vehicle. I am trying to determine thename of that part. There should be two such parts beneath my windshield, one right and one left. I only have the one of the right (passenger side). On the passenger side of the vehicle, below the windshield,at the very outside corner, there is a removable molded black plastic partwhich looks like it has something to do with draining water dropping from thewindshield (or preventing water from dropping directly into the enginecompartment). There is a place for that same part on the opposite side(driver's side) of the vehicle but the part, itself, is missing from it's place. Can anyone tellme the name of this part? Help would be most appreciated!

 

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