Disable some flaky KerberosCredentialsManagerTests.

Various KerberosCredentialsManagerTest test cases are flaky.

Bug: 1116500
Change-Id: I31984b06d49d58f2f4994bf1b0053bd97e82ea9c
Tbr: emaxx@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2357409Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798244}

chrome/browser/chromeos/kerberos/kerberos_credentials_manager_test.cc

@@ -1160,7 +1160,9 @@ TEST_F(KerberosCredentialsManagerTest, UpdateAccountsFromPrefRetry) {
 
 // UpdateAccountsFromPref retries multiple times to add account if addition
 // fails multiple times for network related errors.
-TEST_F(KerberosCredentialsManagerTest, UpdateAccountsFromPrefMultipleRetries) {
+// Disable for being flaky. crbug.com/1116500
+TEST_F(KerberosCredentialsManagerTest,
+       DISABLED_UpdateAccountsFromPrefMultipleRetries) {
   // Starting with Kerberos enabled.
   SetPref(prefs::kKerberosEnabled, base::Value(true));
 
@@ -1200,8 +1202,9 @@ TEST_F(KerberosCredentialsManagerTest, UpdateAccountsFromPrefMultipleRetries) {
 
 // UpdateAccountsFromPref retries to add multiple accounts if addition fails for
 // network related errors.
+// Disable for being flaky. crbug.com/1116500
 TEST_F(KerberosCredentialsManagerTest,
-       UpdateAccountsFromPrefRetryMultipleAccounts) {
+       DISABLED_UpdateAccountsFromPrefRetryMultipleAccounts) {
   // Starting with Kerberos enabled.
   SetPref(prefs::kKerberosEnabled, base::Value(true));
 
@@ -1246,7 +1249,9 @@ TEST_F(KerberosCredentialsManagerTest,
 
 // UpdateAccountsFromPref stops retrying after a certain number of network
 // related errors.
-TEST_F(KerberosCredentialsManagerTest, UpdateAccountsFromPrefStopsRetrying) {
+// Disable for being flaky. crbug.com/1116500
+TEST_F(KerberosCredentialsManagerTest,
+       DISABLED_UpdateAccountsFromPrefStopsRetrying) {
   // Starting with Kerberos enabled.
   SetPref(prefs::kKerberosEnabled, base::Value(true));