Remove CRWSessionController usage from BrowserViewController.

ios/web/public/test/fakes/test_navigation_manager.h

 // Copyright 2016 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_WEB_PUBLIC_TEST_FAKES_TEST_NAVIGATION_MANAGER_H_
 #define IOS_WEB_PUBLIC_TEST_FAKES_TEST_NAVIGATION_MANAGER_H_
 
 #import "ios/web/public/navigation_manager.h"
 
 namespace web {
 
 // A minimal implementation of web::NavigationManager that raises NOTREACHED()
 // on most calls.
-class TestNavigationManager : public web::NavigationManager {
+class TestNavigationManager : public NavigationManager {
  public:
   TestNavigationManager();
   ~TestNavigationManager() override;
   BrowserState* GetBrowserState() const override;
   WebState* GetWebState() const override;
   NavigationItem* GetVisibleItem() const override;
   NavigationItem* GetLastCommittedItem() const override;
   NavigationItem* GetPendingItem() const override;
   NavigationItem* GetTransientItem() const override;
   void DiscardNonCommittedItems() override;
   void LoadIfNecessary() override;
   void LoadURLWithParams(const NavigationManager::WebLoadParams&) override;
   void AddTransientURLRewriter(
       BrowserURLRewriter::URLRewriter rewriter) override;
   int GetItemCount() const override;
   NavigationItem* GetItemAtIndex(size_t index) const override;
   int GetCurrentItemIndex() const override;
   int GetPendingItemIndex() const override;
   int GetLastCommittedItemIndex() const override;
   bool RemoveItemAtIndex(int index) override;
   bool CanGoBack() const override;
   bool CanGoForward() const override;
   bool CanGoToOffset(int offset) const override;
   void GoBack() override;
   void GoForward() override;
   void GoToIndex(int index) override;
+  NavigationItemList GetBackwardItems() const override;
+  NavigationItemList GetForwardItems() const override;
   void Reload(bool check_for_reposts) override;
+  void InsertStateFromManager(const NavigationManager* manager) override;
   void OverrideDesktopUserAgentForNextPendingItem() override;
 
   // Setters for test data.
   void SetLastCommittedItem(NavigationItem* item);
   void SetPendingItem(NavigationItem* item);
   void SetVisibleItem(NavigationItem* item);
 
  private:
   NavigationItem* pending_item_;
   NavigationItem* last_committed_item_;
   NavigationItem* visible_item_;
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_TEST_FAKES_TEST_NAVIGATION_MANAGER_H_