Revert of Moved NavigationManagerImpl serialization out of CRWSessionController.

ios/web/navigation/navigation_manager_impl.h

Index: ios/web/navigation/navigation_manager_impl.h
diff --git a/ios/web/navigation/navigation_manager_impl.h b/ios/web/navigation/navigation_manager_impl.h
index 33d4fbe6e2fc550c51f87fb0f5d9a75e9e366404..63479acf40384e831675454b85d4acac8936fef5 100644
--- a/ios/web/navigation/navigation_manager_impl.h
+++ b/ios/web/navigation/navigation_manager_impl.h
@@ -24,18 +24,14 @@
 struct Referrer;
 class NavigationManagerDelegate;
 class NavigationManagerFacadeDelegate;
-class NavigationManagerStorageBuilder;
 
 // Implementation of NavigationManager.
 // Generally mirrors upstream's NavigationController.
 class NavigationManagerImpl : public NavigationManager {
  public:
-  NavigationManagerImpl();
+  NavigationManagerImpl(NavigationManagerDelegate* delegate,
+                        BrowserState* browser_state);
   ~NavigationManagerImpl() override;
-
-  // Setters for NavigationManagerDelegate and BrowserState.
-  void SetDelegate(NavigationManagerDelegate* delegate);
-  void SetBrowserState(BrowserState* browser_state);
 
   // Sets the CRWSessionController that backs this object.
   // Keeps a strong reference to |session_controller|.
@@ -142,10 +138,6 @@
   int GetIndexForOffset(int offset) const;
 
  private:
-  // The NavigationManagerStorageBuilder functions require access to
-  // private variables of NavigationManagerImpl.
-  friend NavigationManagerStorageBuilder;
-
   // Returns true if the PageTransition for the underlying navigation item at
   // |index| has ui::PAGE_TRANSITION_IS_REDIRECT_MASK.
   bool IsRedirectItemAtIndex(int index) const;