When MapQuest’s general manager woke up in Toronto on Thursday morning, the Texan visiting for a conference knew he couldn’t leave without visiting one place. Doug Berger made a beeline south from his hotel, wandering past the dock where the ill-fated Captain John’s restaurant used to moor and heading deeper toward the city’s shoreline.The vast body of water he arrived at — Lake Ontario — was an essential stop for Berger because it made his company the talk of the tech world and beyond last month. Unlike many of its rivals, MapQuest had rejected U.S. President Donald Trump’s name change…