Update the "Passwords and Forms" section so that they can be toggled.

chrome/browser/ui/webui/settings/passwords_handler.h

+// 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.
+
+#ifndef CHROME_BROWSER_UI_WEBUI_SETTINGS_PASSWORDS_HANDLER_H_
+#define CHROME_BROWSER_UI_WEBUI_SETTINGS_PASSWORDS_HANDLER_H_
+
+#include "base/macros.h"
+#include "chrome/browser/ui/webui/settings/md_settings_ui.h"
+
+namespace content {
+class WebUI;
+}
+
+class Profile;
+
+namespace settings {
+
+class PasswordsHandler : public SettingsPageUIHandler {
+ public:
+  explicit PasswordsHandler(content::WebUI* webui);
+  ~PasswordsHandler() override;
+
+  // SettingsPageUIHandler:
+  void RegisterMessages() override;
+
+ private:
+  // Sets whether chrome should offer to save passwords or not.
+  void HandleSetPaswordSaving(const base::ListValue* args);
+
+  Profile* profile_;  // Weak pointer.
+
+  DISALLOW_COPY_AND_ASSIGN(PasswordsHandler);
+};
+
+}  // namespace settings
+
+#endif  // CHROME_BROWSER_UI_WEBUI_SETTINGS_PASSWORDS_HANDLER_H_