[sheriff] Disable flaky test IntegrationTest.UnregisterUnownedApp on Mac.

R=waffles@chromium.org
TBR=waffles@chromium.org

Bug: 1166196
Change-Id: Iada0c9d68acf3e7c5a0dc395382a2e1cb62d5fad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2626772Reviewed-by: François Doray <fdoray@chromium.org>
Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Commit-Queue: François Doray <fdoray@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843020}

chrome/updater/test/integration_tests.cc

@@ -312,7 +312,14 @@ TEST_F(IntegrationTest, UnregisterUninstalledApp) {
   Clean();
 }
 
-TEST_F(IntegrationTest, UnregisterUnownedApp) {
+// TODO(https://crbug.com/1166196): Fix flaky timeouts. The timeout is in
+// RunWake(0).
+#if defined(OS_MAC)
+#define MAYBE_UnregisterUnownedApp DISABLED_UnregisterUnownedApp
+#else
+#define MAYBE_UnregisterUnownedApp UnregisterUnownedApp
+#endif
+TEST_F(IntegrationTest, MAYBE_UnregisterUnownedApp) {
   RegisterTestApp();
   ExpectInstalled();
   ExpectActiveVersion(UPDATER_VERSION_STRING);