Update fieldtrial testing config for ButterForPayments (again)

This CL adds the account-indication footers also for single-account and
for sync users.

Bug: 1121258
Change-Id: Idc78aad4ccb3ae8173adb97e3011789f174d21d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2627161
Auto-Submit: Marc Treib <treib@chromium.org>
Reviewed-by: Maksim Moskvitin <mmoskvitin@google.com>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843567}

testing/variations/fieldtrial_testing_config.json

@@ -1321,12 +1321,15 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled_Stage2",
+                    "name": "Enabled_Butter_IndicationForAllUsers_Stage2",
                     "enable_features": [
                         "AutofillEnableAccountWalletStorage",
+                        "AutofillEnableInfoBarAccountIndicationFooterForSingleAccountUsers",
+                        "AutofillEnableInfoBarAccountIndicationFooterForSyncUsers",
                         "AutofillEnableSaveCardInfoBarAccountIndicationFooter"
                     ],
                     "disable_features": [
+                        "AutofillEnablePasswordInfoBarAccountIndicationFooter",
                         "WalletRequiresFirstSyncSetupComplete"
                     ]
                 }