Re-enables a bunch of base unittests.

BUG=3836
R=turaj@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/22889004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7399 4adac7df-926f-26a2-2b94-8c16560cd09d
(Auto)update libjingle 77263371-> 77296420

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7400 4adac7df-926f-26a2-2b94-8c16560cd09d