Disable flaky test LoginGuestTest.GuestIsOTR.

chrome/browser/chromeos/login/login_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string>
 
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/system/tray/system_tray.h"
 #include "ash/common/wm_window.h"
 #include "ash/shell.h"
@@ skipping 198 matching lines @@
 }
 
 // Verifies the cursor is not hidden at startup when user is logged in.
 IN_PROC_BROWSER_TEST_F(LoginUserTest, CursorShown) {
   EXPECT_TRUE(ash::Shell::GetInstance()->cursor_manager()->IsCursorVisible());
 
   TestSystemTrayIsVisible();
 }
 
 // After a guest login, we should get the OTR default profile.
-IN_PROC_BROWSER_TEST_F(LoginGuestTest, GuestIsOTR) {
+// Test is flaky https://crbug.com/693106
+IN_PROC_BROWSER_TEST_F(LoginGuestTest, DISABLED_GuestIsOTR) {
   Profile* profile = browser()->profile();
   EXPECT_TRUE(profile->IsOffTheRecord());
   // Ensure there's extension service for this profile.
   EXPECT_TRUE(extensions::ExtensionSystem::Get(profile)->extension_service());
 
   TestSystemTrayIsVisible();
 }
 
 // Verifies the cursor is not hidden at startup when running guest session.
 // Test is flaky https://crbug.com/693106
@@ skipping 42 matching lines @@
   content::WindowedNotificationObserver session_start_waiter(
       chrome::NOTIFICATION_SESSION_STARTED,
       content::NotificationService::AllSources());
   SubmitGaiaAuthOfflineForm(kTestUser, kPassword);
   session_start_waiter.Wait();
 
   TestSystemTrayIsVisible();
 }
 
 }  // namespace chromeos