MD History: Support dynamically updating synced tab data

chrome/browser/ui/webui/foreign_session_handler.cc

 // Copyright (c) 2012 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 "chrome/browser/ui/webui/foreign_session_handler.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 261 matching lines @@
         current_collapsed_sessions->DeepCopy());
     current_collapsed_sessions->Clear();
 
     // Note: we don't own the SyncedSessions themselves.
     for (size_t i = 0; i < sessions.size() && i < kMaxSessionsToShow; ++i) {
       const sync_driver::SyncedSession* session = sessions[i];
       const std::string& session_tag = session->session_tag;
       scoped_ptr<base::DictionaryValue> session_data(
           new base::DictionaryValue());
       // The items which are to be written into |session_data| are also
-      // described in chrome/browser/resources/ntp4/other_sessions.js in
-      // @typedef for SessionData. Please update it whenever you add or remove
-      // any keys here.
+      // described in chrome/browser/resources/history/externs.js
+      // @typedef for ForeignSession. Please update it whenever you add or
+      // remove any keys here.
       session_data->SetString("tag", session_tag);
       session_data->SetString("name", session->session_name);
       session_data->SetString("deviceType", session->DeviceTypeAsString());
       session_data->SetString("modifiedTime",
                               FormatSessionTime(session->modified_time));
+      session_data->SetDouble("timestamp", session->modified_time.ToJsTime());
 
       bool is_collapsed = collapsed_sessions->HasKey(session_tag);
       session_data->SetBoolean("collapsed", is_collapsed);
       if (is_collapsed)
         current_collapsed_sessions->SetBoolean(session_tag, true);
 
       scoped_ptr<base::ListValue> window_list(new base::ListValue());
       const std::string group_name =
           base::FieldTrialList::FindFullName("TabSyncByRecency");
       if (group_name != "Enabled") {
@@ skipping 126 matching lines @@
   // collapsed state persists.
   PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
   DictionaryPrefUpdate update(prefs, prefs::kNtpCollapsedForeignSessions);
   if (is_collapsed)
     update.Get()->SetBoolean(session_tag, true);
   else
     update.Get()->Remove(session_tag, NULL);
 }
 
 }  // namespace browser_sync