Handle empty error pages in DidFinishDocumentLoad

content/renderer/internal_document_state_data.h

 // Copyright (c) 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_RENDERER_INTERNAL_DOCUMENT_STATE_DATA_H_
 #define CONTENT_RENDERER_INTERNAL_DOCUMENT_STATE_DATA_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 33 matching lines @@
 
   const GURL& searchable_form_url() const { return searchable_form_url_; }
   void set_searchable_form_url(const GURL& url) { searchable_form_url_ = url; }
   const std::string& searchable_form_encoding() const {
     return searchable_form_encoding_;
   }
   void set_searchable_form_encoding(const std::string& encoding) {
     searchable_form_encoding_ = encoding;
   }
 
-  // True if an error page should be used, if the http status code also
-  // indicates an error.
-  bool use_error_page() const { return use_error_page_; }
-  void set_use_error_page(bool use_error_page) {
-    use_error_page_ = use_error_page;
-  }
-
   // True if the user agent was overridden for this page.
   bool is_overriding_user_agent() const { return is_overriding_user_agent_; }
   void set_is_overriding_user_agent(bool state) {
     is_overriding_user_agent_ = state;
   }
 
   // True if we have to reset the scroll and scale state of the page
   // after the provisional load has been committed.
   bool must_reset_scroll_and_scale_state() const {
     return must_reset_scroll_and_scale_state_;
@@ skipping 23 matching lines @@
 
  protected:
   ~InternalDocumentStateData() override;
 
  private:
   bool did_first_visually_non_empty_layout_;
   bool did_first_visually_non_empty_paint_;
   int http_status_code_;
   GURL searchable_form_url_;
   std::string searchable_form_encoding_;
-  bool use_error_page_;
   bool is_overriding_user_agent_;
   bool must_reset_scroll_and_scale_state_;
   bool cache_policy_override_set_;
   blink::WebURLRequest::CachePolicy cache_policy_override_;
 
   DISALLOW_COPY_AND_ASSIGN(InternalDocumentStateData);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_INTERNAL_DOCUMENT_STATE_DATA_H_