Disable UserAddingScreenTest.ScreenVisibility

Disable the test on ASAN and MSAN due to flaky.

Bug: 1067461
TBR: rsorokin@chromium.org
TBR: xiyuan@chromium.org
Change-Id: I37fd5dbf1d9a8a8d5898c4ada97461fb300cf532
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2137917Reviewed-by: Owen Min <zmin@chromium.org>
Commit-Queue: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#756824}

chrome/browser/chromeos/login/ui/user_adding_screen_browsertest.cc

@@ -287,7 +287,13 @@ IN_PROC_BROWSER_TEST_F(UserAddingScreenTest, PRE_ScreenVisibility) {
   StartupUtils::MarkOobeCompleted();
 }
 
-IN_PROC_BROWSER_TEST_F(UserAddingScreenTest, ScreenVisibility) {
+// crbug.com/1067461: Flakes on ASAN and MSAN
+#if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER)
+#define MAYBE_ScreenVisibility DISABLED_ScreenVisibility
+#else
+#define MAYBE_ScreenVisibility ScreenVisibility
+#endif
+IN_PROC_BROWSER_TEST_F(UserAddingScreenTest, MAYBE_ScreenVisibility) {
   LoginUser(test_users_[0]);
 
   UserAddingScreen::Get()->Start();