Brake shoes cracked! Replace?

[ShrimpBurrito]

I'm in the process of repacking the wheel bearings today, and upon pulling off the drum, I noticed that both of the brake shoes are cracked. I've never seen this before, although the only drum brakes I have worked on before with any regularity are the rear brakes on some vehicles.

Is this normal wear, or do they have to be replaced? Picture is attached.

Thanks!
Dave