Add missing forward declaration
Add missing forward declaration

SudiptaBiswas/moose,lindsayad/moose,andrsd/moose,SudiptaBiswas/moose,harterj/moose,laagesen/moose,dschwen/moose,nuclear-wizard/moose,friedmud/moose,lindsayad/moose,sapitts/moose,yipenggao/moose,SudiptaBiswas/moose,liuwenf/moose,milljm/moose,Chuban/moose,dschwen/moose,idaholab/moose,idaholab/moose,YaqiWang/moose,jessecarterMOOSE/moose,SudiptaBiswas/moose,Chuban/moose,nuclear-wizard/moose,Chuban/moose,lindsayad/moose,idaholab/moose,jessecarterMOOSE/moose,dschwen/moose,sapitts/moose,friedmud/moose,permcody/moose,milljm/moose,nuclear-wizard/moose,permcody/moose,bwspenc/moose,lindsayad/moose,nuclear-wizard/moose,liuwenf/moose,laagesen/moose,liuwenf/moose,harterj/moose,sapitts/moose,jessecarterMOOSE/moose,milljm/moose,laagesen/moose,YaqiWang/moose,friedmud/moose,sapitts/moose,bwspenc/moose,harterj/moose,andrsd/moose,andrsd/moose,harterj/moose,idaholab/moose,permcody/moose,harterj/moose,YaqiWang/moose,yipenggao/moose,laagesen/moose,laagesen/moose,andrsd/moose,milljm/moose,Chuban/moose,YaqiWang/moose,bwspenc/moose,permcody/moose,sapitts/moose,bwspenc/moose,idaholab/moose,dschwen/moose,jessecarterMOOSE/moose,yipenggao/moose,friedmud/moose,yipenggao/moose,liuwenf/moose,jessecarterMOOSE/moose,dschwen/moose,andrsd/moose,bwspenc/moose,liuwenf/moose,lindsayad/moose,liuwenf/moose,milljm/moose,SudiptaBiswas/moose