Update the assignment operator

components/navigation_interception/navigation_params.cc

 // Copyright (c) 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/navigation_interception/navigation_params.h"
 
 namespace navigation_interception {
 
-NavigationParams::NavigationParams(const NavigationParams& other) {
-  Assign(other);
-}
-
 NavigationParams::NavigationParams(const GURL& url,
                                    const content::Referrer& referrer,
                                    bool has_user_gesture,
                                    bool is_post,
                                    ui::PageTransition transition_type,
                                    bool is_redirect,
                                    bool is_external_protocol,
                                    bool is_main_frame,
                                    const GURL& base_url_for_data_url)
     : url_(url),
       referrer_(referrer),
       has_user_gesture_(has_user_gesture),
       is_post_(is_post),
       transition_type_(transition_type),
       is_redirect_(is_redirect),
       is_external_protocol_(is_external_protocol),
       is_main_frame_(is_main_frame),
       base_url_for_data_url_(base_url_for_data_url) {}
 
-void NavigationParams::operator=(const NavigationParams& rhs) {
-  Assign(rhs);
-}
-
-void NavigationParams::Assign(const NavigationParams& other) {
-  url_ = other.url();
-  referrer_ = other.referrer();
-  has_user_gesture_ = other.has_user_gesture();
-  is_post_ = other.is_post();
-  transition_type_ = other.transition_type();
-  is_redirect_ = other.is_redirect();
-  is_external_protocol_ = other.is_external_protocol();
-  is_main_frame_ = other.is_main_frame();
-}
+NavigationParams::NavigationParams(const NavigationParams&) = default;
 
 }  // namespace navigation_interception