Actually disable Wallet card saving on Linux.

components/autofill.gypi

 # Copyright (c) 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.
 
 {
   'targets': [
     {
       # Private target only used in components/autofill.
       # GN version: //components/autofill/core/browser:regexes
       'target_name': 'autofill_regexes',
@@ skipping 209 matching lines @@
         'autofill/core/browser/webdata/autofill_webdata_backend_impl.cc',
         'autofill/core/browser/webdata/autofill_webdata_backend_impl.h',
         'autofill/core/browser/webdata/autofill_webdata_service.cc',
         'autofill/core/browser/webdata/autofill_webdata_service.h',
         'autofill/core/browser/webdata/autofill_webdata_service_observer.h',
 
         # This file is generated by the autofill_regexes action.
         '<(SHARED_INTERMEDIATE_DIR)/autofill_regex_constants.cc',
       ],
       'conditions': [
-        ['desktop_linux==1', {
+        ['desktop_linux != 1', {
           # Controls whether Wallet cards can be saved to the local instance of
           # chrome.
-          'defines': [ 'ENABLE_SAVE_WALLET_CARDS_LOCALLY=0' ],
-        }, {
-          'defines': [ 'ENABLE_SAVE_WALLET_CARDS_LOCALLY=1' ],
+          'defines': [ 'ENABLE_SAVE_WALLET_CARDS_LOCALLY' ],
         }],
       ],
 
       # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
       'msvs_disabled_warnings': [4267, ],
     },
 
     {
       # GN version: //components/autofill/core/browser:test_support
       'target_name': 'autofill_core_test_support',
@@ skipping 246 matching lines @@
             ],
           },
           'includes': [
             '../ios/web/js_compile.gypi',
           ],
         },
       ],
     }],
   ],
 }