Revert of Remove CRWSessionEntry usage from BrowserViewController.

ios/chrome/browser/ui/browser_view_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/chrome/browser/ui/browser_view_controller.h"
 
 #import <AssetsLibrary/AssetsLibrary.h>
 #import <MobileCoreServices/MobileCoreServices.h>
 #import <PassKit/PassKit.h>
 #import <Photos/Photos.h>
@@ skipping 152 matching lines @@
 #import "ios/net/request_tracker.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 #include "ios/public/provider/chrome/browser/ui/app_rating_prompt.h"
 #include "ios/public/provider/chrome/browser/ui/default_ios_web_view_factory.h"
 #import "ios/public/provider/chrome/browser/voice/voice_search_bar.h"
 #import "ios/public/provider/chrome/browser/voice/voice_search_bar_owner.h"
 #include "ios/public/provider/chrome/browser/voice/voice_search_controller.h"
 #include "ios/public/provider/chrome/browser/voice/voice_search_controller_delegate.h"
 #include "ios/public/provider/chrome/browser/voice/voice_search_provider.h"
 #import "ios/web/navigation/crw_session_controller.h"
+#import "ios/web/navigation/crw_session_entry.h"
 #include "ios/web/navigation/navigation_manager_impl.h"
 #include "ios/web/public/active_state_manager.h"
 #include "ios/web/public/navigation_item.h"
 #import "ios/web/public/navigation_manager.h"
 #include "ios/web/public/referrer_util.h"
 #include "ios/web/public/ssl_status.h"
 #include "ios/web/public/url_scheme_util.h"
 #include "ios/web/public/web_client.h"
 #import "ios/web/public/web_state/context_menu_params.h"
 #import "ios/web/public/web_state/crw_web_view_proxy.h"
@@ skipping 1720 matching lines @@
 
   FindInPageController* controller = GetFindInPageController(tab);
   if (controller.findInPageModel.enabled) {
     [self showFindBarWithAnimation:NO
                         selectText:YES
                        shouldFocus:[_findBarController isFocused]];
   }
 
   // Hide the toolbar if displaying phone NTP.
   if (!IsIPadIdiom()) {
-    web::NavigationItem* item = [tab navigationManager]->GetVisibleItem();
+    CRWSessionEntry* entry =
+        [[tab navigationManager]->GetSessionController() currentEntry];
     BOOL hideToolbar = NO;
-    if (item) {
-      GURL url = item->GetURL();
+    if (entry) {
+      GURL url = [entry navigationItem]->GetURL();
       BOOL isNTP = url.GetOrigin() == GURL(kChromeUINewTabURL);
       hideToolbar = isNTP && !_isOffTheRecord &&
                     ![_toolbarController isOmniboxFirstResponder] &&
                     ![_toolbarController showingOmniboxPopup];
     }
     [[_toolbarController view] setHidden:hideToolbar];
   }
 }
 
 - (void)updateDialogPresenterActiveState {
@@ skipping 2853 matching lines @@
   }
   return YES;
 }
 
 #pragma mark - PreloadControllerDelegate methods
 
 - (BOOL)shouldUseDesktopUserAgent {
   return [_model currentTab].useDesktopUserAgent;
 }
 
+- (CRWSessionEntry*)currentSessionEntry {
+  Tab* tab = [_model currentTab];
+  if (![tab navigationManager])
+    return nil;
+  return [[tab navigationManager]->GetSessionController() currentEntry];
+}
+
 #pragma mark - BookmarkBridgeMethods
 
 // If an added or removed bookmark is the same as the current url, update the
 // toolbar so the star highlight is kept in sync.
 - (void)bookmarkNodeModified:(const BookmarkNode*)node {
   if ([_model currentTab] && node->url() == [_model currentTab].url)
     [self updateToolbar];
 }
 
 // If all bookmarks are removed, update the toolbar so the star highlight is
@@ skipping 188 matching lines @@
 
 - (UIView*)voiceSearchButton {
   return _voiceSearchButton;
 }
 
 - (id<LogoAnimationControllerOwner>)logoAnimationControllerOwner {
   return [self currentLogoAnimationControllerOwner];
 }
 
 @end