Revert of Reland: Enable Wallet metadata sync.

components/autofill/core/common/autofill_switches.cc

 // Copyright 2013 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 "components/autofill/core/common/autofill_switches.h"
 
 namespace autofill {
 namespace switches {
 
 // Disables using device's camera to scan a new credit card when filling out a
@@ skipping 46 matching lines @@
 // account creation.
 const char kEnablePasswordGeneration[]      = "enable-password-generation";
 
 // Enables/disables suggestions without typing anything (on first click).
 const char kEnableSingleClickAutofill[]     = "enable-single-click-autofill";
 
 // Enables suggestions with substring matching instead of prefix matching.
 const char kEnableSuggestionsWithSubstringMatch[] =
     "enable-suggestions-with-substring-match";
 
+// Enables syncing usage counts and last use dates of Wallet addresses and
+// cards.
+const char kEnableWalletMetadataSync[]      = "enable-wallet-metadata-sync";
+
 // Ignores autocomplete="off" for Autofill data (profiles + credit cards).
 const char kIgnoreAutocompleteOffForAutofill[] =
     "ignore-autocomplete-off-autofill";
 
 // Removes the requirement that we recieved a ping from the autofill servers
 // and that the user doesn't have the given form blacklisted. Used in testing.
 const char kLocalHeuristicsOnlyForPasswordGeneration[] =
     "local-heuristics-only-for-password-generation";
 
 // Annotates forms with Autofill field type predictions.
@@ skipping 15 matching lines @@
 const char kDisableAccessorySuggestionView[] =
     "disable-autofill-keyboard-accessory-view";
 
 // Enables showing suggestions in a keyboard accessory view.
 const char kEnableAccessorySuggestionView[] =
     "enable-autofill-keyboard-accessory-view";
 #endif  // defined(OS_ANDROID)
 
 }  // namespace switches
 }  // namespace autofill