Refactor serialisation of openerId & openerNavigationIndex.

ios/web/navigation/navigation_manager_impl.h

 // Copyright 2013 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_NAVIGATION_NAVIGATION_MANAGER_IMPL_H_
 #define IOS_WEB_NAVIGATION_NAVIGATION_MANAGER_IMPL_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 49 matching lines @@
   // Keeps a strong reference to |session_controller|.
   // This method should only be called when deserializing |session_controller|
   // and joining it with its NavigationManager. Other cases should call
   // InitializeSession() or ReplaceSessionHistory().
   // TODO(stuartmorgan): Also move deserialization of CRWSessionControllers
   // under the control of this class, and move the bulk of CRWSessionController
   // logic into it.
   void SetSessionController(CRWSessionController* session_controller);
 
   // Initializes a new session history, supplying a unique |window_name| for the
-  // window (or nil). |opener_id| is the id of opener, or nil if there is none.
-  // |opened_by_dom| is YES if the page was opened by DOM.
-  // |opener_index| is the navigation index of the opener, or -1 if there is
-  // none.
-  void InitializeSession(NSString* window_name,
-                         NSString* opener_id,
-                         BOOL opened_by_dom,
-                         int opener_navigation_index);
+  // window (or nil). |opened_by_dom| is YES if the page was opened by DOM.
+  void InitializeSession(NSString* window_name, BOOL opened_by_dom);
 
   // Replace the session history with a new one, where |items| is the
   // complete set of navigation items in the new history, and |current_index|
   // is the index of the currently active item.
   void ReplaceSessionHistory(std::vector<std::unique_ptr<NavigationItem>> items,
                              int current_index);
 
   // Sets the delegate used to drive the navigation controller facade.
   void SetFacadeDelegate(NavigationManagerFacadeDelegate* facade_delegate);
   NavigationManagerFacadeDelegate* GetFacadeDelegate() const;
@@ skipping 114 matching lines @@
   // List of transient url rewriters added by |AddTransientURLRewriter()|.
   std::unique_ptr<std::vector<BrowserURLRewriter::URLRewriter>>
       transient_url_rewriters_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationManagerImpl);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_NAVIGATION_NAVIGATION_MANAGER_IMPL_H_