Moved |openedByDOM| to WebState's CreateParams and public interface.

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 154 matching lines @@
 #include "ios/chrome/grit/ios_strings.h"
 #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"
 #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/user_agent.h"
 #include "ios/web/public/web_client.h"
 #import "ios/web/public/web_state/context_menu_params.h"
@@ skipping 2225 matching lines @@
                   openedByDOM:YES
                       atIndex:TabModelConstants::kTabPositionAutomatically
                  inBackground:NO];
   return childTab.webState;
 }
 
 - (void)closeWebState:(web::WebState*)webState {
   // Only allow a web page to close itself if it was opened by DOM, or if there
   // are no navigation items.
   Tab* tab = LegacyTabHelper::GetTabForWebState(webState);
-  DCHECK([[tab navigationManagerImpl]->GetSessionController() isOpenedByDOM] ||
-         ![tab navigationManager]->GetItemCount());
+  DCHECK(webState->HasOpener() || ![tab navigationManager]->GetItemCount());
 
   if (![self tabModel])
     return;
 
   NSUInteger index = [[self tabModel] indexOfTab:tab];
   if (index != NSNotFound)
     [[self tabModel] closeTabAtIndex:index];
 }
 
 - (web::WebState*)webState:(web::WebState*)webState
@@ skipping 2696 matching lines @@
 
 - (UIView*)voiceSearchButton {
   return _voiceSearchButton;
 }
 
 - (id<LogoAnimationControllerOwner>)logoAnimationControllerOwner {
   return [self currentLogoAnimationControllerOwner];
 }
 
 @end