Re-enable the messagequeue unittests. These were commented out at one point but never reenabled.
Re-enable the messagequeue unittests. These were commented out at one point but never reenabled.

R=hellner@chromium.org, henrike@webrtc.org
CC=juberti@webrtc.org,pthatcher@webrtc.org
BUG=

Review URL: https://webrtc-codereview.appspot.com/41499004

git-svn-id: 03ae4fbe531b1eefc9d815f31e49022782c42458@8086 4adac7df-926f-26a2-2b94-8c16560cd09d

svn2github/webrtc-Revision-8758,svn2github/webrtc-Revision-8758,svn2github/webrtc-Revision-8758,svn2github/webrtc-Revision-8758,svn2github/webrtc-Revision-8758,svn2github/webrtc-Revision-8758