[ios] ARCMigrate i/c/b/tabs/tab_model_synced_window_delegate*.

ios/chrome/browser/tabs/tab_model_synced_window_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_CHROME_BROWSER_TABS_TAB_MODEL_SYNCED_WINDOW_DELEGATE_H_
 #define IOS_CHROME_BROWSER_TABS_TAB_MODEL_SYNCED_WINDOW_DELEGATE_H_
 
 #include "base/macros.h"
 #include "components/sessions/core/session_id.h"
 #include "components/sync_sessions/synced_window_delegate.h"
 
-@class TabModel;
+class WebStateList;
 
 namespace browser_sync {
 class SyncedTabDelegate;
 }
 
 // A TabModelSyncedWindowDelegate is the iOS-based implementation of
 // SyncedWindowDelegate.
 class TabModelSyncedWindowDelegate
     : public sync_sessions::SyncedWindowDelegate {
  public:
-  explicit TabModelSyncedWindowDelegate(TabModel* tab_model);
+  TabModelSyncedWindowDelegate(WebStateList* web_state_list,
+                               SessionID session_id);
   ~TabModelSyncedWindowDelegate() override;
 
   // SyncedWindowDelegate:
   bool HasWindow() const override;
   SessionID::id_type GetSessionId() const override;
   int GetTabCount() const override;
   int GetActiveIndex() const override;
   bool IsApp() const override;
   bool IsTypeTabbed() const override;
   bool IsTypePopup() const override;
   bool IsTabPinned(const sync_sessions::SyncedTabDelegate* tab) const override;
   sync_sessions::SyncedTabDelegate* GetTabAt(int index) const override;
   // Return the tab id for the tab at |index|.
   SessionID::id_type GetTabIdAt(int index) const override;
   bool IsSessionRestoreInProgress() const override;
   bool ShouldSync() const override;
 
  private:
-  TabModel* tab_model_;  // weak, owns us.
+  WebStateList* web_state_list_;
+  SessionID session_id_;
 
   DISALLOW_COPY_AND_ASSIGN(TabModelSyncedWindowDelegate);
 };
 
 #endif  // IOS_CHROME_BROWSER_TABS_TAB_MODEL_SYNCED_WINDOW_DELEGATE_H_