[sheriff] Disable TwoClientWebAppsIntegrationTestMacWinLinux

Bug: 1273666
Change-Id: I5b8374db26f85008870683eee4add07cb6332686
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3461692
Owners-Override: Antonio Sartori <antoniosartori@chromium.org>
Commit-Queue: Antonio Sartori <antoniosartori@chromium.org>
Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org>
Commit-Queue: Arthur Sonzogni <arthursonzogni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#970590}
diff --git a/chrome/browser/sync/test/integration/two_client_web_apps_integration_test_mac_win_linux.cc b/chrome/browser/sync/test/integration/two_client_web_apps_integration_test_mac_win_linux.cc
index 27e224e..e4671fd4 100644
--- a/chrome/browser/sync/test/integration/two_client_web_apps_integration_test_mac_win_linux.cc
+++ b/chrome/browser/sync/test/integration/two_client_web_apps_integration_test_mac_win_linux.cc
@@ -429,8 +429,17 @@
   helper_.CheckAppInListNotLocallyInstalled("SiteA");
 }
 
-IN_PROC_BROWSER_TEST_F(TwoClientWebAppsIntegrationTestMacWinLinux,
-                       WebAppIntegration_41_47SiteA_42_40Client2_45SiteA) {
+// Flaky, see https://crbug.com/1273666
+#if BUILDFLAG(IS_MAC)
+#define MAYBE_WebAppIntegration_41_47SiteA_42_40Client2_45SiteA \
+  DISABLED_WebAppIntegration_41_47SiteA_42_40Client2_45SiteA
+#else
+#define MAYBE_WebAppIntegration_41_47SiteA_42_40Client2_45SiteA \
+  WebAppIntegration_41_47SiteA_42_40Client2_45SiteA
+#endif
+IN_PROC_BROWSER_TEST_F(
+    TwoClientWebAppsIntegrationTestMacWinLinux,
+    MAYBE_WebAppIntegration_41_47SiteA_42_40Client2_45SiteA) {
   // Test contents are generated by script. Please do not modify!
   // See `chrome/test/webapps/README.md` for more info.
   // Sheriffs: Disabling this test is supported.