Remove "Show saved copy" button from error page

components/error_page/common/localized_error.h

 // Copyright (c) 2011 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 COMPONENTS_ERROR_PAGE_COMMON_LOCALIZED_ERROR_H_
 #define COMPONENTS_ERROR_PAGE_COMMON_LOCALIZED_ERROR_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
-#include "components/error_page/common/offline_page_types.h"
 #include "url/gurl.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace error_page {
 
 struct ErrorPageParams;
 
 class LocalizedError {
  public:
   // Fills |error_strings| with values to be used to build an error page used
   // on HTTP errors, like 404 or connection reset.
   static void GetStrings(int error_code,
                          const std::string& error_domain,
                          const GURL& failed_url,
                          bool is_post,
                          bool stale_copy_in_cache,
                          bool can_show_network_diagnostics_dialog,
-                         error_page::OfflinePageStatus offline_page_status,
+                         bool has_offline_pages,
                          const std::string& locale,
                          const std::string& accept_languages,
                          scoped_ptr<error_page::ErrorPageParams> params,
                          base::DictionaryValue* strings);
 
   // Returns a description of the encountered error.
   static base::string16 GetErrorDetails(const std::string& error_domain,
                                         int error_code,
                                         bool is_post);
 
   // Returns true if an error page exists for the specified parameters.
   static bool HasStrings(const std::string& error_domain, int error_code);
 
   static const char kHttpErrorDomain[];
 
  private:
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(LocalizedError);
 };
 
 }  // namespace error_page
 
 #endif  // COMPONENTS_ERROR_PAGE_COMMON_LOCALIZED_ERROR_H_