There aren't probably any PNaCl specific aspects to these. This is untrusted code so naturally there will be limits. You could start at http://src.chromium.org

There aren't probably any PNaCl specific aspects to these. This is untrusted code so naturally there will be limits. You could start at http://src.chromium.org/viewvc/chrome/trunk/src/ppapi/api/ http://src.chromium.org/viewvc/chrome/trunk/src/ppapi/api/