Try to restore window.opener when opening blocked popups

chrome/browser/ui/browser_navigator.h

 // Copyright (c) 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 CHROME_BROWSER_UI_BROWSER_NAVIGATOR_H_
 #define CHROME_BROWSER_UI_BROWSER_NAVIGATOR_H_
 
 #include <string>
 
 #include "chrome/browser/ui/host_desktop.h"
@@ skipping 194 matching lines @@
   content::GlobalRequestID transferred_global_request_id;
 
   // Refers to which desktop this navigation should occur on. May be passed
   // explicitly or inferred from an existing Browser instance.
   chrome::HostDesktopType host_desktop_type;
 
   // Indicates whether this navigation  should replace the current
   // navigation entry.
   bool should_replace_current_entry;
 
+  // Indicates whether |source_contents| should be set as opener when creating
+  // |target_contents|.
+  bool should_set_opener;
+
  private:
   NavigateParams();
 };
 
 // Copies fields from |params| struct to |nav_params| struct.
 void FillNavigateParamsFromOpenURLParams(chrome::NavigateParams* nav_params,
                                          const content::OpenURLParams& params);
 
 // Navigates according to the configuration specified in |params|.
 void Navigate(NavigateParams* params);
 
 // Returns true if the url is allowed to open in incognito window.
 bool IsURLAllowedInIncognito(const GURL& url,
                              content::BrowserContext* browser_context);
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_BROWSER_NAVIGATOR_H_