Change fill-on-account-select to use Features API, not a custom flag

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 "build/build_config.h"
 #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
 // credit card form.
 const char kDisableCreditCardScan[]         = "disable-credit-card-scan";
 
-// Disables the experiment for the password manager to only fill on account
-// selection, rather than autofilling on page load.
-const char kDisableFillOnAccountSelect[]    = "disable-fill-on-account-select";
-
 // Disables the experimental Full Form Autofill on iOS feature.
 const char kDisableFullFormAutofillIOS[]    = "disable-full-form-autofill-ios";
 
 // Force hiding the local save checkbox in the autofill dialog box for getting
 // the full credit card number for a wallet card. The card will never be stored
 // locally.
 const char kDisableOfferStoreUnmaskedWalletCards[] =
     "disable-offer-store-unmasked-wallet-cards";
 
 // Disables offering to upload credit cards.
 const char kDisableOfferUploadCreditCards[] =
     "disable-offer-upload-credit-cards";
 
 // Disables password generation when we detect that the user is going through
 // account creation.
 const char kDisablePasswordGeneration[]     = "disable-password-generation";
 
 // The "disable" flag for kEnableSingleClickAutofill.
 const char kDisableSingleClickAutofill[]    = "disable-single-click-autofill";
 
 // Enables using device's camera to scan a new credit card when filling out a
 // credit card form.
 const char kEnableCreditCardScan[]          = "enable-credit-card-scan";
 
-// Enables the experiment for the password manager to only fill on account
-// selection, rather than autofilling on page load, with highlighting of fields.
-const char kEnableFillOnAccountSelect[]     = "enable-fill-on-account-select";
-
 // Enables the experimental Full Form Autofill on iOS feature.
 const char kEnableFullFormAutofillIOS[]     = "enable-full-form-autofill-ios";
 
 // Force showing the local save checkbox in the autofill dialog box for getting
 // the full credit card number for a wallet card.
 const char kEnableOfferStoreUnmaskedWalletCards[] =
     "enable-offer-store-unmasked-wallet-cards";
 
 // Enables offering to upload credit cards.
 const char kEnableOfferUploadCreditCards[] = "enable-offer-upload-credit-cards";
@@ skipping 29 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