Removed CRWSessionEntry from CRWWebController.

ios/chrome/browser/tabs/tab.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/chrome/browser/tabs/tab.h"
 
 #import <CoreLocation/CoreLocation.h>
 #import <UIKit/UIKit.h>
 
 #include <utility>
@@ skipping 1339 matching lines @@
     DCHECK([self navigationManager]);
     [[self navigationManager]->GetSessionController() discardNonCommittedItems];
     // Ensure the UI reflects the current entry, not the just-discarded pending
     // entry.
     [parentTabModel_ notifyTabChanged:self];
     return YES;
   }
   return NO;
 }
 
-- (void)webWillFinishHistoryNavigationFromEntry:(CRWSessionEntry*)fromEntry {
+- (void)webWillFinishHistoryNavigation {
   [parentTabModel_ notifyTabChanged:self];
 }
 
 - (void)webDidUpdateHistoryStateWithPageURL:(const GURL&)pageUrl {
   favicon::FaviconDriver* faviconDriver =
       favicon::WebFaviconDriver::FromWebState(self.webState);
   if (faviconDriver) {
     // Fetch the favicon for the new URL.
     faviconDriver->FetchFavicon(pageUrl);
   }
@@ skipping 840 matching lines @@
 
 - (TabModel*)parentTabModel {
   return parentTabModel_;
 }
 
 - (FormInputAccessoryViewController*)inputAccessoryViewController {
   return inputAccessoryViewController_.get();
 }
 
 @end