LOS ANGELES — Willy Adames took accountability for a boneheaded base-running mistake that resulted in him being doubled up at second base late in the Giants’ loss to the Dodgers. “That mistake is probably the most ashamed that I would feel playing the game,” the veteran shortstop said after the 4-0 defeat. “I know that can’t happen. It was my fault. That’s on me.” Giants shortstop Willy Adames owned up to a crucial base-running mistake in Wednesday’s 4-0 loss to the Dodgers. Getty Images Adames knew he had screwed up about the time he touched third base, when the roar of the crowd told him that the fly ball off Drew Gilbert’s bat had been caught on the warning track in left-center field. There was only one out, and Adames didn’t tag up. Center fielder Andy Pages fired the ball back to cutoff man Mookie Betts, who was able to lob it casually to Miguel Rojas at second base and double up Adames to end the seventh inning. He had made it far enough that he wasn’t even in the camera frame when the throw arrived.…