The Highway Traffic Act differentiates between a "pedestrian crossover" and any other place where a pedestrian may cross.
The new law MAY apply to pedestrian crossovers if the crossover is at an intersection, but crossovers require specific signage to be considered a "pedestrian crossover" for purposes of that change in the law.
It starts with the definition of a pedestrian crossover in the Highway Traffic Act.
"“pedestrian crossover” means any portion of a roadway, designated by by-law of a municipality, at an intersection or elsewhere, distinctly indicated for pedestrian crossing by signs on the highway and lines or other markings on the surface of the roadway as prescribed by the regulations; (“passage pour piétons”)"
The Highway Traffic Act specifically calls out "pedestrian crossover" in the changes to the law.
Pedestrian crossover
Duties of driver
(1) When a pedestrian is crossing on the roadway within a pedestrian crossover, the driver of a vehicle approaching the crossover,
(a) shall stop before entering the crossover;
(b) shall not overtake another vehicle already stopped at the crossover; and
(c) shall not proceed into the crossover until the pedestrian is no longer on the roadway. 2015, c. 14, s. 39 (1).
This is different from pedestrians crossing at an ordinary crosswalk at an ordinary intersection, where there is no duty stipulated to not continue until the pedestrian is completely off the road.
Yielding to pedestrians
(7) When under this section a driver is permitted to proceed, the driver shall yield the right of way to pedestrians lawfully within a crosswalk. R.S.O. 1990, c. H.8, s. 144 (7).
The signage referred that makes a crosswalk a "pedestrian crossover" subject to the new law can be found in the "Signs" regulation under Pedestrian Crossover.
http://www.ontario.ca/laws/regulation/900615#BK5
If it doesn't have the required signage, it is not a pedestrian crossover that requires you to stop until the pedestrian is completely clear of the road. It is merely a crosswalk, a different animal, that only requires you to yield and not interfere with the pedestrian after which you may continue once the pedestrian has cleared your path of intended travel.