Remove ThreadObj #define and kThreadMaxNameLength from thread_wrapper.

BUG=
R=hbos@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/47679004

Cr-Commit-Position: refs/heads/master@{#8792}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8792 4adac7df-926f-26a2-2b94-8c16560cd09d
11 files changed