Sheriff: Disable RelaunchNotificationControllerTest.PolicyUnset on TSAN build

TBR=grt@chromium.org

Bug: 1004568
Change-Id: Ia54998fa290e42b5b13b83d9d65d86e8f093a9b8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1808285Reviewed-by: Fergus Dall <sidereal@google.com>
Cr-Commit-Position: refs/heads/master@{#697026}

chrome/browser/ui/views/relaunch_notification/relaunch_notification_controller_unittest.cc

@@ -197,7 +197,14 @@ TEST_F(RelaunchNotificationControllerTest, CreateDestroy) {
 // Without the browser.relaunch_notification preference set, the controller
 // should not be observing the UpgradeDetector, and should therefore never
 // attempt to show any notifications.
-TEST_F(RelaunchNotificationControllerTest, PolicyUnset) {
+
+// TODO(1004568) Disabled due to race condition.
+#if defined(THREAD_SANATIZER)
+#define MAYBE_PolicyUnset DISABLED_PolicyUnset
+#else
+#define MAYBE_PolicyUnset PolicyUnset
+#endif
+TEST_F(RelaunchNotificationControllerTest, MAYBE_PolicyUnset) {
   ::testing::StrictMock<MockControllerDelegate> mock_controller_delegate;
 
   FakeRelaunchNotificationController controller(