NTP: Allow hiding tips and bookmark sync....

chrome/browser/dom_ui/new_tab_ui.cc

 // Copyright (c) 2006-2009 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.
 
 #include "build/build_config.h"
 
 #include "chrome/browser/dom_ui/new_tab_ui.h"
 
 #include <set>
 
@@ skipping 606 matching lines @@
   ChromeThread::PostTask(
       ChromeThread::IO, FROM_HERE,
       NewRunnableMethod(
           &chrome_url_data_manager,
           &ChromeURLDataManager::AddDataSource,
           new DOMUIThemeSource(GetProfile())));
 }
 
 // static
 void NewTabUI::RegisterUserPrefs(PrefService* prefs) {
+  prefs->RegisterIntegerPref(prefs::kNTPPrefVersion, 0);
+
   MostVisitedHandler::RegisterUserPrefs(prefs);
   ShownSectionsHandler::RegisterUserPrefs(prefs);
   if (NewTabUI::WebResourcesEnabled())
     TipsHandler::RegisterUserPrefs(prefs);
+
+  UpdateUserPrefsVersion(prefs);
+}
+
+// static
+bool NewTabUI::UpdateUserPrefsVersion(PrefService* prefs) {
+  const int old_pref_version = prefs->GetInteger(prefs::kNTPPrefVersion);
+  if (old_pref_version != current_pref_version()) {
+    MigrateUserPrefs(prefs, old_pref_version, current_pref_version());
+    prefs->SetInteger(prefs::kNTPPrefVersion, current_pref_version());
+    return true;
+  }
+  return false;
+}
+
+// static
+void NewTabUI::MigrateUserPrefs(PrefService* prefs, int old_pref_version,
+                                int new_pref_version) {
+  ShownSectionsHandler::MigrateUserPrefs(prefs, old_pref_version,
+                                         current_pref_version());
 }
 
 // static
 bool NewTabUI::WebResourcesEnabled() {
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
   return !command_line->HasSwitch(switches::kDisableWebResources);
 }
 
 // static
 bool NewTabUI::FirstRunDisabled() {
@@ skipping 201 matching lines @@
   localized_strings.SetString(L"pagedisplaytooltip",
       l10n_util::GetString(IDS_NEW_TAB_PAGE_DISPLAY_TOOLTIP));
   localized_strings.SetString(L"firstrunnotification",
       l10n_util::GetString(IDS_NEW_TAB_FIRST_RUN_NOTIFICATION));
   localized_strings.SetString(L"closefirstrunnotification",
       l10n_util::GetString(IDS_NEW_TAB_CLOSE_FIRST_RUN_NOTIFICATION));
   localized_strings.SetString(L"makethishomepage",
       l10n_util::GetString(IDS_NEW_TAB_MAKE_THIS_HOMEPAGE));
   localized_strings.SetString(L"themelink",
       l10n_util::GetString(IDS_THEMES_GALLERY_URL));
+  localized_strings.SetString(L"tips",
+      l10n_util::GetString(IDS_NEW_TAB_TIPS));
+  localized_strings.SetString(L"sync",
+      l10n_util::GetString(IDS_NEW_TAB_SHOW_HIDE_BOOKMARK_SYNC));
+
   // Don't initiate the sync related message passing with the page if the sync
   // code is not present.
   if (profile_->GetProfileSyncService())
     localized_strings.SetString(L"syncispresent", "true");
   else
     localized_strings.SetString(L"syncispresent", "false");
 
   if (!profile_->GetPrefs()->GetBoolean(prefs::kHomePageIsNewTabPage))
     localized_strings.SetString(L"showsetashomepage", "true");
 
@@ skipping 43 matching lines @@
   std::string json_html;
   jstemplate_builder::AppendJsonHtml(&localized_strings, &json_html);
 
   static const std::string template_data_placeholder =
       "<!-- template data placeholder -->";
   ReplaceFirstSubstringAfterOffset(&full_html_, 0, template_data_placeholder,
       json_html);
 
   jstemplate_builder::AppendI18nTemplateProcessHtml(&full_html_);
 }