Try to restore window.opener when opening blocked popups

chrome/browser/ui/browser_navigator.h

Index: chrome/browser/ui/browser_navigator.h
diff --git a/chrome/browser/ui/browser_navigator.h b/chrome/browser/ui/browser_navigator.h
index 1ba38fb9ea0d7f92f843a0c1f01fc14980de1ecb..1db84d140647cb91f9219aa725a7bf8fb1073436 100644
--- a/chrome/browser/ui/browser_navigator.h
+++ b/chrome/browser/ui/browser_navigator.h
@@ -212,6 +212,14 @@ struct NavigateParams {
   // navigation entry.
   bool should_replace_current_entry;
 
+  // Indicates whether the session storage namespace map of |source_contents|
+  // should be used to create |target_contents|.
+  bool should_copy_session_storage_namespace;
+
+  // Indicates whether |source_contents| should be set as opener when creating
+  // |target_contents|.
+  bool should_set_opener;
+
  private:
   NavigateParams();
 };