Disable AutoLaunchedNonKioskEnabledAppTest.NotLaunched

Disabling flaky AutoLaunchedNonKioskEnabledAppTest.NotLaunched test
while I investigate it.

BUG=838992

Change-Id: I34f7f6c0f37ab08f6efa7ba087b8c18e7c11c408
Reviewed-on: https://chromium-review.googlesource.com/1040786Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Toni Barzic <tbarzic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#555581}

chrome/browser/chromeos/login/auto_launched_kiosk_browsertest.cc

@@ -542,7 +542,9 @@ class AutoLaunchedNonKioskEnabledAppTest : public AutoLaunchedKioskTest {
   DISALLOW_COPY_AND_ASSIGN(AutoLaunchedNonKioskEnabledAppTest);
 };
 
-IN_PROC_BROWSER_TEST_F(AutoLaunchedNonKioskEnabledAppTest, NotLaunched) {
+// Disabled due to flaky failures: https://crbug.com/838992
+IN_PROC_BROWSER_TEST_F(AutoLaunchedNonKioskEnabledAppTest,
+                       DISABLED_NotLaunched) {
   // Verify that Chrome hasn't already exited, e.g. in order to apply user
   // session flags.
   ASSERT_FALSE(termination_observer_->terminated());