Remove CRWSessionEntry.

ios/web/web_state/ui/crw_web_controller.mm

 // Copyright 2012 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/ui/crw_web_controller.h"
 
 #import <WebKit/WebKit.h>
 
 #import <objc/runtime.h>
 #include <stddef.h>
@@ skipping 665 matching lines @@
 // This is called after |-applyWebViewScrollZoomScaleFromScrollState:|.
 - (void)finishApplyingWebViewScrollZoomScale;
 // Sets zoom scale value for webview scroll view from |zoomState|.
 - (void)applyWebViewScrollZoomScaleFromZoomState:
     (const web::PageZoomState&)zoomState;
 // Sets scroll offset value for webview scroll view from |scrollState|.
 - (void)applyWebViewScrollOffsetFromScrollState:
     (const web::PageScrollState&)scrollState;
 // Returns the referrer for the current page.
 - (web::Referrer)currentReferrer;
-// Adds a new CRWSessionEntry with the given URL and state object to the history
+// Adds a new NavigationItem with the given URL and state object to the history
 // stack. A state object is a serialized generic JavaScript object that contains
-// details of the UI's state for a given CRWSessionEntry/URL.
+// details of the UI's state for a given NavigationItem/URL.
 // TODO(stuartmorgan): Move the pushState/replaceState logic into
 // NavigationManager.
 - (void)pushStateWithPageURL:(const GURL&)pageURL
                  stateObject:(NSString*)stateObject
                   transition:(ui::PageTransition)transition;
-// Assigns the given URL and state object to the current CRWSessionEntry.
+// Assigns the given URL and state object to the current NavigationItem.
 - (void)replaceStateWithPageURL:(const GURL&)pageUrl
                     stateObject:(NSString*)stateObject;
 // Sets _documentURL to newURL, and updates any relevant state information.
 - (void)setDocumentURL:(const GURL&)newURL;
 // Sets last committed NavigationItem's title to the given |title|, which can
 // not be nil.
 - (void)setNavigationItemTitle:(NSString*)title;
 // Returns YES if the current navigation item corresponds to a web page
 // loaded by a POST request.
 - (BOOL)isCurrentNavigationItemPOST;
@@ skipping 1396 matching lines @@
       }
       [_delegate webLoadCancelled:_URLOnStartLoading];
       break;
     case web::PAGE_LOADED:
       break;
   }
 }
 
 - (void)goToItemAtIndex:(int)index {
   CRWSessionController* sessionController = self.sessionController;
-  web::NavigationItemList items = sessionController.items;
+  const web::ScopedNavigationItemImplList& items = sessionController.items;
   if (index < 0 || index >= static_cast<int>(items.size())) {
     NOTREACHED();
     return;
   }
 
   if (!_webStateImpl->IsShowingWebInterstitial())
     [self recordStateInHistory];
   web::NavigationItem* fromItem = sessionController.currentItem;
-  web::NavigationItem* toItem = items[index];
+  web::NavigationItem* toItem = items[index].get();
 
   NSUserDefaults* userDefaults = [NSUserDefaults standardUserDefaults];
   if (![userDefaults boolForKey:@"PendingIndexNavigationDisabled"]) {
     [self clearTransientContentView];
 
     // Update the user agent before attempting the navigation.
     [self updateDesktopUserAgentForItem:toItem fromItem:fromItem];
 
     BOOL sameDocumentNavigation =
         [sessionController isSameDocumentNavigationBetweenItem:fromItem
@@ skipping 3068 matching lines @@
 - (void)simulateLoadRequestWithURL:(const GURL&)URL {
   _lastRegisteredRequestURL = URL;
   _loadPhase = web::LOAD_REQUESTED;
 }
 
 - (NSString*)referrerFromNavigationAction:(WKNavigationAction*)action {
   return [action.request valueForHTTPHeaderField:kReferrerHeaderName];
 }
 
 @end