Made renderer-initiated requests registration more reliable.

ios/web/navigation/navigation_manager_util.h

Index: ios/web/navigation/navigation_manager_util.h
diff --git a/ios/web/navigation/navigation_manager_util.h b/ios/web/navigation/navigation_manager_util.h
index 0c22977528f5381d3eb34d19d105173155c77c31..2c565a64be0ad2aa91a352f12aff1206a3ecc61c 100644
--- a/ios/web/navigation/navigation_manager_util.h
+++ b/ios/web/navigation/navigation_manager_util.h
@@ -13,6 +13,12 @@ namespace web {
 class NavigationItem;
 class NavigationManager;
 
+// Returns transient, committed or pending navigation item with given
+// |unique_id| or null if item is not found. Item's unique id is retrieved via
+// GetUniqueID method.
+NavigationItem* GetItemWithUniqueID(NavigationManager* navigation_manager,
+                                    int unique_id);
+
 // Returns committed navigation item with given |unique_id| or null if item
 // is not found or it is pending or transient. Item's unique id is retrieved
 // via GetUniqueID method.