Create NavigationHandle after beforeunload with PlzNavigate.

content/browser/frame_host/navigation_request.h

Index: content/browser/frame_host/navigation_request.h
diff --git a/content/browser/frame_host/navigation_request.h b/content/browser/frame_host/navigation_request.h
index ca6d969d32e93519b00ab8c8ca3e5e733692360f..12b3e7ef5414ddf4c634f1a32081a5690de1712c 100644
--- a/content/browser/frame_host/navigation_request.h
+++ b/content/browser/frame_host/navigation_request.h
@@ -93,6 +93,7 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
   // threading subtleties.
   static std::unique_ptr<NavigationRequest> CreateRendererInitiated(
       FrameTreeNode* frame_tree_node,
+      NavigationEntryImpl* entry,
       const CommonNavigationParams& common_params,
       const BeginNavigationParams& begin_params,
       int current_history_list_offset,
@@ -111,6 +112,11 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
     return request_params_;
   }
 
+  // Updates the navigation start time.
+  void set_navigation_start_time(const base::TimeTicks& time) {
+    common_params_.navigation_start = time;
+  }
+
   NavigationURLLoader* loader_for_testing() const { return loader_.get(); }
 
   NavigationState state() const { return state_; }
@@ -150,7 +156,7 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
 
   // Creates a NavigationHandle. This should be called after any previous
   // NavigationRequest for the FrameTreeNode has been destroyed.
-  void CreateNavigationHandle(int pending_nav_entry_id);
+  void CreateNavigationHandle();
 
   // Transfers the ownership of the NavigationHandle to |render_frame_host|.
   // This should be called when the navigation is ready to commit, because the
@@ -165,6 +171,8 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
     on_start_checks_complete_closure_ = closure;
   }
 
+  int nav_entry_id() const { return nav_entry_id_; }
+
  private:
   NavigationRequest(FrameTreeNode* frame_tree_node,
                     const CommonNavigationParams& common_params,
@@ -229,6 +237,7 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
   RestoreType restore_type_;
   bool is_view_source_;
   int bindings_;
+  int nav_entry_id_ = 0;
 
   // Whether the navigation should be sent to a renderer a process. This is
   // true, except for 204/205 responses and downloads.