Load offline page if reading list entry takes more than 1s to load.

components/sessions/core/serialized_navigation_entry.cc

 // 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.
 
 #include "components/sessions/core/serialized_navigation_entry.h"
 
 #include <stddef.h>
 
 #include "base/pickle.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 344 matching lines @@
     sync_data.set_referrer(referrer_url_.spec());
   } else {
     sync_data.set_referrer(std::string());
   }
   sync_data.set_obsolete_referrer_policy(mapped_referrer_policy);
   sync_data.set_correct_referrer_policy(referrer_policy_);
   sync_data.set_title(base::UTF16ToUTF8(title_));
 
   // Page transition core.
   static_assert(static_cast<int32_t>(ui::PAGE_TRANSITION_LAST_CORE) ==
-                static_cast<int32_t>(ui::PAGE_TRANSITION_KEYWORD_GENERATED),
+                    static_cast<int32_t>(ui::PAGE_TRANSITION_READING_LIST),
                 "PAGE_TRANSITION_LAST_CORE must equal "
-                "PAGE_TRANSITION_KEYWORD_GENERATED");
+                "PAGE_TRANSITION_READING_LIST");
   switch (ui::PageTransitionStripQualifier(transition_type_)) {
     case ui::PAGE_TRANSITION_LINK:
       sync_data.set_page_transition(
           sync_pb::SyncEnums_PageTransition_LINK);
       break;
     case ui::PAGE_TRANSITION_TYPED:
       sync_data.set_page_transition(
           sync_pb::SyncEnums_PageTransition_TYPED);
       break;
     case ui::PAGE_TRANSITION_AUTO_BOOKMARK:
@@ skipping 98 matching lines @@
           redirect_chain_[last_entry].spec());
     }
   }
 
   sync_data.set_is_restored(is_restored_);
 
   return sync_data;
 }
 
 }  // namespace sessions