Add "AutofillScanCardholderName" feature.

components/autofill/core/browser/autofill_manager.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/browser/autofill_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <set>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/containers/adapters.h"
+#include "base/feature_list.h"
 #include "base/files/file_util.h"
 #include "base/guid.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 234 matching lines @@
     return false;
 
   AutofillField* autofill_field = GetAutofillField(form, field);
   if (!autofill_field)
     return false;
 
   bool is_card_number_field =
       autofill_field->Type().GetStorableType() == CREDIT_CARD_NUMBER &&
       base::ContainsOnlyChars(CreditCard::StripSeparators(field.value),
                               base::ASCIIToUTF16("0123456789"));
-  if (!is_card_number_field &&
-      autofill_field->Type().GetStorableType() != CREDIT_CARD_NAME_FULL) {
+
+  bool is_scannable_name_on_card_field =
+      autofill_field->Type().GetStorableType() == CREDIT_CARD_NAME_FULL &&
+      base::FeatureList::IsEnabled(kAutofillScanCardholderName);
+
+  if (!is_card_number_field && !is_scannable_name_on_card_field)
     return false;
-  }
 
   static const int kShowScanCreditCardMaxValueLength = 6;
   return field.value.size() <= kShowScanCreditCardMaxValueLength;
 }
 
 bool AutofillManager::ShouldShowCreditCardSigninPromo(
     const FormData& form,
     const FormFieldData& field) {
   if (!IsAutofillCreditCardSigninPromoEnabled())
     return false;
@@ skipping 1784 matching lines @@
     if (i > 0)
       fputs("Next oldest form:\n", file);
   }
   fputs("\n", file);
 
   fclose(file);
 }
 #endif  // ENABLE_FORM_DEBUG_DUMP
 
 }  // namespace autofill