Rebase webrtc/base with r6232:
cd webrtc/base
svn diff -r 6231:6232 http://webrtc.googlecode.com/svn/trunk/talk/base > 6232.diff
patch -p0 -i 6232.diff

BUG=3379
TBR=pbos@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/14599004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6239 4adac7df-926f-26a2-2b94-8c16560cd09d