Disable BackgroundTracingManagerBrowserTest.CallTriggersMoreThanOnceOnlyGatherOnce under TSan.

content/browser/tracing/background_tracing_manager_browsertest.cc

Index: content/browser/tracing/background_tracing_manager_browsertest.cc
diff --git a/content/browser/tracing/background_tracing_manager_browsertest.cc b/content/browser/tracing/background_tracing_manager_browsertest.cc
index e0001b86dd91ae821a3ee03f1db8f6d63c053b43..e2d11775c7ce44be8db7980771c2a364a288ebbb 100644
--- a/content/browser/tracing/background_tracing_manager_browsertest.cc
+++ b/content/browser/tracing/background_tracing_manager_browsertest.cc
@@ -184,9 +184,18 @@ IN_PROC_BROWSER_TEST_F(BackgroundTracingManagerBrowserTest,
   }
 }
 
+#if defined(THREAD_SANITIZER)
+// There's a race in ConvertableToTraceFormat that's hard to suppress,
+// see http://crbug.com/559117.
+#define MAYBE_CallTriggersMoreThanOnceOnlyGatherOnce \
+    DISABLED_CallTriggersMoreThanOnceOnlyGatherOnce
+#else
+#define MAYBE_CallTriggersMoreThanOnceOnlyGatherOnce \
+    CallTriggersMoreThanOnceOnlyGatherOnce
+#endif
 // This tests triggering more than once still only gathers once.
 IN_PROC_BROWSER_TEST_F(BackgroundTracingManagerBrowserTest,
-                       CallTriggersMoreThanOnceOnlyGatherOnce) {
+                       MAYBE_CallTriggersMoreThanOnceOnlyGatherOnce) {
   {
     SetupBackgroundTracingManager();