Added msvs_enable_winrt to enable creating Windows Store compatible projects for .dlls that are consumed by WinRT applications.

Patch from coopp@microsoft.com.

BUG=
R=scottmg@chromium.org

Review URL: https://codereview.chromium.org/607553002

git-svn-id: http://gyp.googlecode.com/svn/trunk@1985 78cadc50-ecff-11dd-a971-7dbc132099af
5 files changed