At this point in time we do not know whether or not they are Convention Refugees. 

The majority are however reported to be Convention Refugee claimants and it will be up to the Refugee Determination Division of the Immigration and Refugee Board of Canada to determine if they meet the definition of Convention Refugee set out at s. 96 of the Immigration and Refugee Act after a hearing on the merits of the claim.

This system was put in place after the 1985 SCOC decision in Singh v Canada [1985] 1 S.C.R. 177 that determined "everyone" in Canada including persons without legal immigration status are entitled to Charter protection and "fundamental justice" (our version of due process) under s. 7 in the determination of their claims for protections as Convention Refugees.

BTW this process was put into place by the Mulroney Conservative government and remained in place during the Harper administrations.