At 6:49 of the third period in the Kings/Flyers game, Philadelphia requested a Coach's Challenge to review whether a Los Angeles player interfered with Philadelphia goaltender Brian Elliott prior to Drew Doughty's goal.

After reviewing all available replays and consulting with NHL Hockey Operations staff, the Referee determined that Los Angeles' Dustin Brown interfered with Elliott before the puck crossed the goal line. According to Rule 78.7, "The standard for overturning the call in the event of a 'GOAL' call on the ice is that the Referee, after reviewing any and all available replays and consulting with the Toronto Video Room, determines that the goal should have been disallowed due to 'Interference on the Goalkeeper,' as described in Rules 69.1, 69.3 and 69.4."
Therefore the original call is overturned - no goal Los Angeles Kings.
Since the Coach's Challenge resulted in the original call being overturned, the Philadelphia Flyers retain their time-out.