Only display Link Doctor page on 404 errors with no body

chrome/renderer/navigation_state.h

 // Copyright (c) 2009 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 CHROME_RENDERER_NAVIGATION_STATE_H_
 #define CHROME_RENDERER_NAVIGATION_STATE_H_
 #pragma once
 
 #include <string>
 
@@ skipping 192 matching lines @@
   webkit_glue::AltErrorPageResourceFetcher* alt_error_page_fetcher() const {
     return alt_error_page_fetcher_.get();
   }
   void set_alt_error_page_fetcher(webkit_glue::AltErrorPageResourceFetcher* f);
 
   const std::string& security_info() const { return security_info_; }
   void set_security_info(const std::string& security_info) {
     security_info_ = security_info;
   }
 
-  bool postpone_loading_data() const { return postpone_loading_data_; }
-  void set_postpone_loading_data(bool postpone_loading_data) {
-    postpone_loading_data_ = postpone_loading_data;
-  }
-
-  const std::string& postponed_data() const { return postponed_data_; }
-  void clear_postponed_data() { postponed_data_.clear(); }
-  void append_postponed_data(const char* data, size_t data_len) {
-    postponed_data_.append(data, data_len);
+  const bool maybe_use_error_page() const { return maybe_use_error_page_; }

[tony, 2011/02/23 21:43:20]

Nit: Drop the const in front of the bool.  Also, I would just name this
use_error_page().

[mmenke, 2011/02/23 21:53:36]

Both done.

+  void set_maybe_use_error_page(bool maybe_use_error_page) {
+    maybe_use_error_page_ = maybe_use_error_page;
   }
 
   bool is_prerendering() const;
   void set_is_prerendering(bool is_prerendering);
 
   bool was_started_as_prerender() const;
   void set_was_started_as_prerender(bool was_started_as_prerender);
 
   int http_status_code() const { return http_status_code_; }
   void set_http_status_code(int http_status_code) {
@@ skipping 77 matching lines @@
   bool web_timing_histograms_recorded_;
   bool request_committed_;
   bool is_content_initiated_;
   int32 pending_page_id_;
   int pending_history_list_offset_;
   GURL searchable_form_url_;
   std::string searchable_form_encoding_;
   scoped_ptr<webkit_glue::PasswordForm> password_form_data_;
   scoped_ptr<webkit_glue::AltErrorPageResourceFetcher> alt_error_page_fetcher_;
   std::string security_info_;
-  bool postpone_loading_data_;
-  std::string postponed_data_;
+
+  // True if we should use an error page, if the http status code indicates an
+  // error.
+  bool maybe_use_error_page_;
 
   // True if page is being prerendered.  False once prerendered page is
   // displayed.  Preserved across redirects.  Only set for the main frame's
   // data source.
   bool is_prerendering_;
 
   // True if a page load started as a prerender.  Preserved across redirects.
   bool was_started_as_prerender_;
 
   bool cache_policy_override_set_;
@@ skipping 10 matching lines @@
   bool was_within_same_page_;
 
   // A prefetcher is a page that contains link rel=prefetch elements.
   bool was_prefetcher_;
   bool was_referred_by_prefetcher_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationState);
 };
 
 #endif  // CHROME_RENDERER_NAVIGATION_STATE_H_