TRAC #22044

stencilRef and stencilBackRef are now set through the setDepthStencilState on
Renderer.

Signed-off-by: Nicolas Capens
Signed-off-by: Daniel Koch

Author:    Geoff Lang

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1438 736b8ea6-26fd-11df-bfd4-992fa37f6226