Revert of Cleaned up old navigation code that did not use pending navigation item.

ios/web/public/web_state/ui/crw_web_delegate.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_PUBLIC_WEB_STATE_UI_CRW_WEB_DELEGATE_H_
 #define IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_WEB_DELEGATE_H_
 
 #include <stdint.h>
 #import <UIKit/UIKit.h>
 #include <vector>
@@ skipping 40 matching lines @@
 - (void)webWillReload;
 // Called when a page is loaded using loadWithParams.  In
 // |webWillInitiateLoadWithParams|, the |params| argument is non-const so that
 // the delegate can make changes if necessary.
 // TODO(rohitrao): This is not a great API.  Clean it up.
 - (void)webWillInitiateLoadWithParams:
     (web::NavigationManager::WebLoadParams&)params;
 - (void)webDidUpdateSessionForLoadWithParams:
             (const web::NavigationManager::WebLoadParams&)params
                         wasInitialNavigation:(BOOL)initialNavigation;
+// Called from finishHistoryNavigationFromEntry.
+// TODO(crbug.com/692331): Remove this method and use |DidFinishNavigation|.
+- (void)webWillFinishHistoryNavigation;
 
 @optional
 
 // Called to ask CRWWebDelegate if |CRWWebController| should open the given URL.
 // CRWWebDelegate can intercept the request by returning NO and processing URL
 // in own way.
 - (BOOL)webController:(CRWWebController*)webController
         shouldOpenURL:(const GURL&)url
       mainDocumentURL:(const GURL&)mainDocumentURL
           linkClicked:(BOOL)linkClicked;
@@ skipping 40 matching lines @@
 // Called when a PassKit file is downloaded. |data| should be the data from a
 // PassKit file, but this is not guaranteed, and the delegate is responsible for
 // error handling non PassKit data using -[PKPass initWithData:error:]. If the
 // download does not successfully complete, |data| will be nil.
 - (void)webController:(CRWWebController*)webController
     didLoadPassKitObject:(NSData*)data;
 
 @end
 
 #endif  // IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_WEB_DELEGATE_H_