updated to use WinrtEglWindow interface for winrt and wp8
updated to use WinrtEglWindow interface for winrt and wp8

stammen/angleproject,stammen/angleproject,MSOpenTech/angle-win8.0,stammen/angleproject,stammen/angleproject,MSOpenTech/angle-win8.0,MSOpenTech/angle-win8.0,MSOpenTech/angle-win8.0