Created a wrapper class for condition_variable that lets me write (hopefully) reliable tests for some of its properties.

BUG=
TEST=

Review URL: https://webrtc-codereview.appspot.com/600005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2424 4adac7df-926f-26a2-2b94-8c16560cd09d
2 files changed