Updated ownership of NavigationItems within CRWSessionController.

ios/web/navigation/crw_session_controller.h

 // 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.
 
 #ifndef IOS_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_
 #define IOS_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_
 
 #import <Foundation/Foundation.h>
 #include <vector>
 
-#include "ios/web/public/navigation_item_list.h"
+#import "ios/web/navigation/navigation_item_impl_list.h"
 #include "ui/base/page_transition_types.h"
 #include "url/gurl.h"
 
 @class CRWSessionEntry;
 @class CRWSessionCertificatePolicyManager;
 
 namespace web {
 class BrowserState;
 class NavigationManagerImpl;
 struct Referrer;
@@ skipping 16 matching lines @@
 @property(nonatomic, copy) NSString* windowName;
 // Indicates whether the page was opened by DOM (e.g. with |window.open|
 // JavaScript call or by clicking a link with |_blank| target).
 @property(nonatomic, readonly, getter=isOpenedByDOM) BOOL openedByDOM;
 @property(nonatomic, readonly, strong)
     CRWSessionCertificatePolicyManager* sessionCertificatePolicyManager;
 @property(nonatomic, assign) NSTimeInterval lastVisitedTimestamp;
 @property(nonatomic, readonly, copy) NSString* openerId;
 @property(nonatomic, readonly, assign) NSInteger openerNavigationIndex;
 
-// The list of CRWSessionEntries in |_entries|'s NavigationItemImpls.
-@property(nonatomic, readonly) web::NavigationItemList items;
+// The ScopedNavigationItemImplList used to store the NavigationItemImpls for
+// this session.
+@property(nonatomic, readonly) const web::ScopedNavigationItemImplList& items;
 // The current NavigationItem.  During a pending navigation, returns the
 // NavigationItem for that navigation.  If a transient NavigationItem exists,
 // this NavigationItem will be returned.
 @property(nonatomic, readonly) web::NavigationItemImpl* currentItem;
 // Returns the NavigationItem whose URL should be displayed to the user.
 @property(nonatomic, readonly) web::NavigationItemImpl* visibleItem;
 // Returns the NavigationItem corresponding to a load for which no data has yet
 // been received.
 @property(nonatomic, readonly) web::NavigationItemImpl* pendingItem;
 // Returns the NavigationItem corresponding with a transient navigation (i.e.
@@ skipping 95 matching lines @@
 // Set |useDesktopUserAgentForNextPendingItem_| to YES if there is no pending
 // entry, otherwise set |useDesktopUserAgent| in the pending entry.
 - (void)useDesktopUserAgentForNextPendingItem;
 
 // Returns the index of |item| in |items|.
 - (NSInteger)indexOfItem:(web::NavigationItem*)item;
 
 @end
 
 #endif  // IOS_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_