Disable all the tests that are flaking more than 5% on ChromeOS builders.

chrome/browser/chromeos/login/login_utils_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 "chrome/browser/chromeos/login/login_utils.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 555 matching lines @@
   EXPECT_EQ(std::string(), local_state_.Get()->GetString(prefs::kRLZBrand));
 
   // RLZ value for homepage access point should have been initialized.
   base::string16 rlz_string;
   EXPECT_TRUE(RLZTracker::GetAccessPointRlz(
       RLZTracker::ChromeHomePage(), &rlz_string));
   EXPECT_EQ(base::string16(), rlz_string);
 }
 #endif
 
-TEST_P(LoginUtilsBlockingLoginTest, LoginBlocksForUser) {
+// http://crbug.com/396506
+TEST_P(LoginUtilsBlockingLoginTest, DISABLED_LoginBlocksForUser) {
   UserManager* user_manager = UserManager::Get();
   EXPECT_FALSE(user_manager->IsUserLoggedIn());
   EXPECT_FALSE(connector_->IsEnterpriseManaged());
   EXPECT_FALSE(prepared_profile_);
 
   if (GetParam().enroll_device) {
     // Enroll the device.
     EnrollDevice(kUsername);
 
     EXPECT_FALSE(user_manager->IsUserLoggedIn());
@@ skipping 112 matching lines @@
     {4, kUsernameOtherDomain, true},
     {5, kUsernameOtherDomain, true}};
 
 INSTANTIATE_TEST_CASE_P(LoginUtilsBlockingLoginTestInstance,
                         LoginUtilsBlockingLoginTest,
                         testing::ValuesIn(kBlockinLoginTestCases));
 
 }  // namespace
 
 }  // namespace chromeos