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

components/password_manager/core/common/password_manager_features.cc

+// Copyright 2015 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_features.h"
+
+namespace password_manager {
+
+namespace features {
+
+// Disables the save-password prompt. Passwords are then saved automatically,
+// without asking the user.
+const base::Feature kEnableAutomaticPasswordSaving = {
+    "enable-automatic-password-saving", base::FEATURE_DISABLED_BY_DEFAULT};
+
+// Enable supporting of updating password in the password manager on a password
+// change form submit.
+const base::Feature kEnablePasswordChangeSupport = {
+    "enable-password-change-support", base::FEATURE_DISABLED_BY_DEFAULT};
+
+// Enable a context menu item in the password field that allows the user
+// to manually enforce saving of their password.
+const base::Feature kEnablePasswordForceSaving = {
+    "enable-password-force-saving", base::FEATURE_DISABLED_BY_DEFAULT};
+
+}  // namespace features
+
+}  // namespace password_manager