Re-enable allmost all base tests.

BUG=3836
R=marpan@google.com

Review URL: https://webrtc-codereview.appspot.com/22989004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7416 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/base/logging_unittest.cc b/webrtc/base/logging_unittest.cc
index aa43837..7d7c97e 100644
--- a/webrtc/base/logging_unittest.cc
+++ b/webrtc/base/logging_unittest.cc
@@ -83,7 +83,7 @@
   }
 };
 
-TEST(LogTest, DISABLED_ON_MAC(MultipleThreads)) {
+TEST(LogTest, MultipleThreads) {
   int sev = LogMessage::GetLogToStream(NULL);
 
   LogThread thread1, thread2, thread3;