WebRTC: Re-enable TSan deadlock detection.

The bot in client.webrtc.fyi is now green due since
suppressions have been added, so let's remove it
and enable deadlock detection again in the main waterfall.

BUG=webrtc:4106

Review URL: https://codereview.chromium.org/1041133003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/build@294606 0039d316-1c4b-4281-b951-d872f2087c98
7 files changed