PlzNavigate: Show error pages when the navigation failed before commit

content/child/web_url_loader_impl.h

 // Copyright 2014 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_CHILD_WEB_URL_LOADER_IMPL_H_
 #define CONTENT_CHILD_WEB_URL_LOADER_IMPL_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
@@ skipping 22 matching lines @@
 };
 
 class CONTENT_EXPORT WebURLLoaderImpl
     : public NON_EXPORTED_BASE(blink::WebURLLoader) {
  public:
   explicit WebURLLoaderImpl(
       ResourceDispatcher* resource_dispatcher,
       scoped_refptr<base::SingleThreadTaskRunner> task_runner);
   virtual ~WebURLLoaderImpl();
 
-  static blink::WebURLError CreateError(const blink::WebURL& unreachable_url,
-                                        bool stale_copy_in_cache,
-                                        int reason);
   static void PopulateURLResponse(
       const GURL& url,
       const ResourceResponseInfo& info,
       blink::WebURLResponse* response);
 
   // WebURLLoader methods:
   virtual void loadSynchronously(
       const blink::WebURLRequest& request,
       blink::WebURLResponse& response,
       blink::WebURLError& error,
@@ skipping 11 matching lines @@
  private:
   class Context;
   scoped_refptr<Context> context_;
 
   DISALLOW_COPY_AND_ASSIGN(WebURLLoaderImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_WEB_URL_LOADER_IMPL_H_