Disable ReplaceEphemeralAppWithDelayedInstalledApp on Windows due to failures.

chrome/browser/apps/ephemeral_app_browsertest.cc

Index: chrome/browser/apps/ephemeral_app_browsertest.cc
diff --git a/chrome/browser/apps/ephemeral_app_browsertest.cc b/chrome/browser/apps/ephemeral_app_browsertest.cc
index 062d64d65c3dde792a53961a3b99881042acb109..3f54c1adf10defd79eecdd7b8a8c75c960b7e11f 100644
--- a/chrome/browser/apps/ephemeral_app_browsertest.cc
+++ b/chrome/browser/apps/ephemeral_app_browsertest.cc
@@ -889,10 +889,17 @@ IN_PROC_BROWSER_TEST_F(EphemeralAppBrowserTest,
 
 // This is similar to ReplaceEphemeralAppWithInstalledApp, but installs will
 // be delayed until the app is idle.
+#if defined(OS_WIN)
+// Disabled on Windows due to failures. See crbug.com/401028
+#define MAYBE_ReplaceEphemeralAppWithDelayedInstalledApp \
+    DISABLED_ReplaceEphemeralAppWithDelayedInstalledApp
+#else
+#define MAYBE_ReplaceEphemeralAppWithDelayedInstalledApp \
+    ReplaceEphemeralAppWithDelayedInstalledApp
+#endif
 IN_PROC_BROWSER_TEST_F(EphemeralAppBrowserTest,
-                       ReplaceEphemeralAppWithDelayedInstalledApp) {
+                       MAYBE_ReplaceEphemeralAppWithDelayedInstalledApp) {
   InitSyncService();
-
   const Extension* app = InstallAndLaunchEphemeralApp(kNotificationsTestApp);
   ASSERT_TRUE(app);
   std::string app_id = app->id();