LONDON (AP) — Google has promised to give U.K. regulators a role overseeing its plan to phase out existing ad-tracking technology from its Chrome browser. The U.K. competition watchdog has been investigating Google’s proposals to remove so-called third-party cookies over concerns they would undermine digital ad competition and entrench the company’s market power. To address the concerns, Google on Friday offered a set of commitments including giving the watchdog an oversight role as the company designs and develops a replacement technology. The promises also include limiting how Google will use and combine individual user data and not discriminating against rivals in favor of its own ad businesses.