Lawyer Daniel Q. Herbert said he has no trouble placing himself in the shoes of his client Jason Van Dyke — the Chicago police officer facing first-degree murder charges for the shooting death of Laquan McDonald.That’s because Herbert, a former cop himself, understands the split-second decisions officers must make while on patrol.The October 2014 incident has created a political firestorm around city hall since Cook County Associate Judge Franklin U. Valderrama ordered the public release of dashcam video …