PlzNavigate: Show error pages when the navigation failed before commit

content/browser/frame_host/render_frame_host_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_RENDER_FRAME_HOST_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 393 matching lines @@
   void DidCancelPopupMenu();
 #endif
 
   // PlzNavigate: Indicates that a navigation is ready to commit and can be
   // handled by this RenderFrame.
   void CommitNavigation(ResourceResponse* response,
                         scoped_ptr<StreamHandle> body,
                         const CommonNavigationParams& common_params,
                         const RequestNavigationParams& request_params);
 
+  // PlzNavigate
+  // Indicates that a navigation failed and that this RenderFrame should display
+  // an error page.
+  void FailedNavigation(const CommonNavigationParams& common_params,
+                        const RequestNavigationParams& request_params,
+                        bool has_stale_copy_in_cache,
+                        int error_code);
+
   // Sets up the Mojo connection between this instance and its associated render
   // frame if it has not yet been set up.
   void SetUpMojoIfNeeded();
 
   // Tears down the browser-side state relating to the Mojo connection between
   // this instance and its associated render frame.
   void InvalidateMojoConnection();
 
   // Returns whether the frame is focused. A frame is considered focused when it
   // is the parent chain of the focused frame within the frame tree. In
@@ skipping 270 matching lines @@
 
   // NOTE: This must be the last member.
   base::WeakPtrFactory<RenderFrameHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_