FAssignStreamingChunkDelegate::CreateStatic Fails to compile

I’m trying to compile the ShooterGame demo, but the compiler is failing on this line:

(ShooterGameDelegates.cpp: 127)
FGameDelegates::Get().GetAssignStreamingChunkDelegate() = FAssignStreamingChunkDelegate::CreateStatic(AssignStreamingChunk);

I’m guessing 4.5 changed something. What do I need to do to fix this?