Add back method needed by CoreRT
Add back method needed by CoreRT

Signed-off-by: dotnet-bot <03c4cb6107ae99956a7681f2c97ff7104809a2bd@microsoft.com>
Signed-off-by: dotnet-bot-corefx-mirror <03c4cb6107ae99956a7681f2c97ff7104809a2bd@microsoft.com>

ericstj/corefx,ptoonen/corefx,shimingsg/corefx,shimingsg/corefx,Jiayili1/corefx,ptoonen/corefx,ViktorHofer/corefx,ericstj/corefx,wtgodbe/corefx,mmitche/corefx,ericstj/corefx,ericstj/corefx,ericstj/corefx,BrennanConroy/corefx,ViktorHofer/corefx,ptoonen/corefx,ptoonen/corefx,mmitche/corefx,mmitche/corefx,Jiayili1/corefx,Jiayili1/corefx,BrennanConroy/corefx,ericstj/corefx,ViktorHofer/corefx,wtgodbe/corefx,shimingsg/corefx,ViktorHofer/corefx,shimingsg/corefx,wtgodbe/corefx,shimingsg/corefx,ptoonen/corefx,Jiayili1/corefx,wtgodbe/corefx,wtgodbe/corefx,mmitche/corefx,ViktorHofer/corefx,Jiayili1/corefx,ptoonen/corefx,ViktorHofer/corefx,wtgodbe/corefx,shimingsg/corefx,ericstj/corefx,mmitche/corefx,BrennanConroy/corefx,shimingsg/corefx,Jiayili1/corefx,ptoonen/corefx,Jiayili1/corefx,ViktorHofer/corefx,mmitche/corefx,wtgodbe/corefx,mmitche/corefx