It could be the end of an era for the iconic Los Angeles Times building downtown. The newspaper has been in the same art deco structure near City Hall for more than 80 years. Now, Tribune Media plans to sell it to a Canadian developer called the Onni Group. They won’t say for how much. If the deal goes through, the Times headquarters could be renovated into a new office and retail complex. It’s not clear if the paper would stay or move. Either way, Times Mirror Square holds a very different place in the city than it once did. We look at the property’s past and present.