Use c++11 features in webrtc/base/network.cc as a test to see if we can use them.

R=kwiberg@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/25209005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7777 4adac7df-926f-26a2-2b94-8c16560cd09d