Use ChromeBrowserStateManager instead of BrowserListIOS.

ios/chrome/browser/ui/browser_list_ios.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_UI_BROWSER_LIST_IOS_H_
-#define IOS_CHROME_BROWSER_UI_BROWSER_LIST_IOS_H_
-
-#include <vector>
-
-#import "ios/chrome/browser/ui/browser_ios.h"
-
-namespace ios {
-class ChromeBrowserState;
-}
-
-// Modeled after chrome/browser/ui/browser_list.
-
-class BrowserListIOS {
- public:
-  typedef std::vector<id<BrowserIOS>> BrowserVector;
-  typedef BrowserVector::iterator iterator;
-  typedef BrowserVector::const_iterator const_iterator;
-
-  // Note: browsers are not retained, just like desktop browser lists, their
-  // management is outside the list.
-  static void AddBrowser(id<BrowserIOS> browser);
-  static void RemoveBrowser(id<BrowserIOS> browser);
-
-  static id<BrowserIOS> GetLastActiveWithBrowserState(
-      ios::ChromeBrowserState* browser_state);
-
-  static const_iterator begin();
-  static const_iterator end();
-
-  static bool empty() { return !browsers_ || browsers_->empty(); }
-  static size_t size() { return browsers_ ? browsers_->size() : 0; }
-
-  // Returns true if at least one incognito session is active.
-  static bool IsOffTheRecordSessionActive();
-
- private:
-  static BrowserVector* browsers_;
-
-  static void EnsureBrowsersIsValid();
-};
-
-#endif  // IOS_CHROME_BROWSER_UI_BROWSER_LIST_IOS_H_