494f20977e
This class is being used from both libjingle and webrtc but we recently had a regression when we added dependency on libjingle's Thread class. This cleans that up and moves the implementation of CriticalSection and helper classes into the source file. I'm also improving debugging facilities and constness. BUG= R=magjed@webrtc.org Review URL: https://webrtc-codereview.appspot.com/51769004 Cr-Commit-Position: refs/heads/master@{#9089}