[ios] WebStateList owns all WebState it manages.

ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios.mm

Index: ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios.mm
diff --git a/ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios.mm b/ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios.mm
index c1a9437cf8263db0fe1e8b699f6dad2b2763af0c..f2a9cb543bf1c1b313cf4dcfa4552612c5b58ddc 100644
--- a/ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios.mm
+++ b/ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios.mm
@@ -15,13 +15,12 @@
 #import "ios/chrome/browser/tabs/tab.h"
 #import "ios/chrome/browser/tabs/tab_model.h"
 #import "ios/chrome/browser/tabs/tab_model_list.h"
+#import "ios/shared/chrome/browser/tabs/web_state_list.h"
 #import "ios/web/navigation/navigation_manager_impl.h"
 #include "ios/web/public/navigation_item.h"
 #import "ios/web/web_state/web_state_impl.h"
 #import "net/base/mac/url_conversions.h"
 
-using web::WebStateImpl;
-
 TabRestoreServiceDelegateImplIOS::TabRestoreServiceDelegateImplIOS(
     ios::ChromeBrowserState* browser_state)
     : browser_state_(browser_state) {}
@@ -80,16 +79,16 @@ sessions::LiveTab* TabRestoreServiceDelegateImplIOS::AddRestoredTab(
   DCHECK_LT(selected_navigation, static_cast<int>(navigations.size()));
 
   web::WebState::CreateParams params(browser_state_);
-  std::unique_ptr<WebStateImpl> webState(new WebStateImpl(params));
+  std::unique_ptr<web::WebStateImpl> web_state(new web::WebStateImpl(params));
   std::vector<std::unique_ptr<web::NavigationItem>> items =
       sessions::IOSSerializedNavigationBuilder::ToNavigationItems(navigations);
-  webState->GetNavigationManagerImpl().ReplaceSessionHistory(
+  web_state->GetNavigationManagerImpl().ReplaceSessionHistory(
       std::move(items), selected_navigation);
-  TabModel* tabModel = tab_model();
-  Tab* tab =
-      [tabModel insertTabWithWebState:std::move(webState) atIndex:tab_index];
+
+  WebStateList* web_state_list = [tab_model() webStateList];
+  web_state_list->InsertWebState(tab_index, std::move(web_state));
   // TODO(crbug.com/661636): Handle tab-switch animation somehow...
-  [tabModel setCurrentTab:tab];
+  web_state_list->ActivateWebStateAt(tab_index);
   return nullptr;
 }
 
@@ -113,5 +112,6 @@ sessions::LiveTab* TabRestoreServiceDelegateImplIOS::ReplaceRestoredTab(
 }
 
 void TabRestoreServiceDelegateImplIOS::CloseTab() {
-  [[tab_model() currentTab] close];
+  WebStateList* web_state_list = [tab_model() webStateList];
+  web_state_list->CloseWebStateAt(web_state_list->active_index());
 }