Fixed Visual Studio 2013 Update 4 build failures for WinRT Change-Id: I393e9800d1c2e902f60728e1f7d0debca66b76a0 Reviewed-on: https://chromium-review.googlesource.com/231140 Tested-by: Cooper Partin <coopp@microsoft.com> Reviewed-by: Geoff Lang <geofflang@chromium.org>