PlzNavigate: remove NavigatorImpl::FailedNavigation

content/browser/frame_host/navigator_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 CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 70 matching lines @@
                           ui::PageTransition page_transition,
                           const GlobalRequestID& transferred_global_request_id,
                           bool should_replace_current_entry,
                           const std::string& method,
                           scoped_refptr<ResourceRequestBodyImpl> post_body,
                           const std::string& extra_headers) override;
   void OnBeforeUnloadACK(FrameTreeNode* frame_tree_node, bool proceed) override;
   void OnBeginNavigation(FrameTreeNode* frame_tree_node,
                          const CommonNavigationParams& common_params,
                          const BeginNavigationParams& begin_params) override;
-  void FailedNavigation(FrameTreeNode* frame_tree_node,
-                        bool has_stale_copy_in_cache,
-                        int error_code) override;
   void LogResourceRequestTime(base::TimeTicks timestamp,
                               const GURL& url) override;
   void LogBeforeUnloadTime(
       const base::TimeTicks& renderer_before_unload_start_time,
       const base::TimeTicks& renderer_before_unload_end_time) override;
   void CancelNavigation(FrameTreeNode* frame_tree_node) override;
   void DiscardPendingEntryIfNeeded(NavigationHandleImpl* handle) override;
 
  private:
   // Holds data used to track browser side navigation metrics.
@@ skipping 53 matching lines @@
   NavigatorDelegate* delegate_;
 
   std::unique_ptr<NavigatorImpl::NavigationMetricsData> navigation_data_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigatorImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_IMPL_H_