Added WebStateImpl::OnNavigationFinished().

ios/web/web_state/web_state_impl.mm

 // 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.
 
 #import "ios/web/web_state/web_state_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/logging.h"
@@ skipping 680 matching lines @@
 
 bool WebStateImpl::HasOpener() const {
   return created_with_opener_;
 }
 
 void WebStateImpl::OnProvisionalNavigationStarted(const GURL& url) {
   for (auto& observer : observers_)
     observer.ProvisionalNavigationStarted(url);
 }
 
+void WebStateImpl::OnNavigationFinished(web::NavigationContext* context) {
+  for (auto& observer : observers_)
+    observer.DidFinishNavigation(context);
+}
+
 #pragma mark - NavigationManagerDelegate implementation
 
 void WebStateImpl::GoToIndex(int index) {
   [web_controller_ goToItemAtIndex:index];
 }
 
 void WebStateImpl::LoadURLWithParams(
     const NavigationManager::WebLoadParams& params) {
   [web_controller_ loadWithParams:params];
 }
@@ skipping 16 matching lines @@
     const LoadCommittedDetails& load_details) {
   for (auto& observer : observers_)
     observer.NavigationItemCommitted(load_details);
 }
 
 WebState* WebStateImpl::GetWebState() {
   return this;
 }
 
 }  // namespace web