[Password Manager] Switch password manager code to use "base/feature_list.h".

components/password_manager/core/common/password_manager_switches.cc

 // Copyright 2014 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/password_manager/core/common/password_manager_switches.h"
 
 namespace password_manager {
 
 namespace switches {
 
@@ skipping 20 matching lines @@
 // pages.
 const char kDisallowAutofillSyncCredentialForReauth[] =
     "disallow-autofill-sync-credential-for-reauth";
 
 // Enable affiliation based matching, so that credentials stored for an Android
 // application will also be considered matches for, and be filled into
 // corresponding Web applications.
 const char kEnableAffiliationBasedMatching[] =
     "enable-affiliation-based-matching";
 
-// Disables the save-password prompt. Passwords are then saved automatically,
-// without asking the user.
-const char kEnableAutomaticPasswordSaving[] =
-    "enable-automatic-password-saving";
-
 // Enable dropping the credential used to sync passwords.
 const char kEnableDropSyncCredential[] = "enable-drop-sync-credential";
 
 // Enable saving and filling for the sync signin form. Currently the default
 // behavior.
 const char kEnableManagerForSyncSignin[] = "enable-manager-for-sync-signin";
 
-// Enable supporting of updating password in the password manager on a password
-// change form submit.
-const char kEnablePasswordChangeSupport[] = "enable-password-change-support";
-
-// Enable a context menu item in the password field that allows the user
-// to manually enforce saving of their password.
-const char kEnablePasswordForceSaving[] = "enable-password-force-saving";
-
 }  // namespace switches
 
 }  // namespace password_manager