"The Saturday Night Kid"

This story about the filming of "The Saturday Night Kid" (Paramount, 1929) appeared in the Pacific Electric company magazine in September 1929. Thanks to L.A. transit historian Sean Ault for finding the article. Note the Belasco Theatre, 1050 S. Hill St. in the photo.

See the pages on the Los Angeles Theatres site about the Belasco Theatre for a history of this 1926 legit house as well as many photos. 

The scene shot on the streetcar is 9:25 into the film but there's nothing of the Belasco to be seen. The entire film is on YouTube with the title changed to "Love 'em and Leave 'em"

On IMDb: "The Saturday Night Kid"