Revert of r5622 "disable unit tests" as it should be fixed in r5623.

BUG=2981
R=wu@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/9269004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5624 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/tools/valgrind-webrtc/gtest_exclude/libjingle_unittest.gtest-tsan.txt b/tools/valgrind-webrtc/gtest_exclude/libjingle_unittest.gtest-tsan.txt
index 06cab16..2905ebf 100644
--- a/tools/valgrind-webrtc/gtest_exclude/libjingle_unittest.gtest-tsan.txt
+++ b/tools/valgrind-webrtc/gtest_exclude/libjingle_unittest.gtest-tsan.txt
@@ -1,6 +1,4 @@
 # Tests that are failing when run under TSan.
-AtomicOpsTest.Decrement
-AtomicOpsTest.Increment
 CpuMonitorTest.TestCpuMonitor
 PhysicalSocketTest.TestUdpReadyToSendIPv4
 ThreadTest.Release