ntp: remove ShownSectionHandler and all references to it

chrome/common/pref_names.cc

 // 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.
 
 #include "chrome/common/pref_names.h"
 
 #include "base/basictypes.h"
 
 namespace prefs {
 
@@ skipping 1239 matching lines @@
 
 // Serves dates to determine display of elements on the NTP.
 const char kNTPDateResourceServer[] = "ntp.date_resource_server";
 
 // Which bookmarks folder should be visible on the new tab page v4.
 const char kNTPShownBookmarksFolder[] = "ntp.shown_bookmarks_folder";
 
 // Which page should be visible on the new tab page v4
 const char kNTPShownPage[] = "ntp.shown_page";
 
-// Which sections should be visible on the new tab page
-// 1 - Show the most visited sites in a grid
-// 2 - Show the most visited sites as a list
-// 4 - Show the recent section
-// 8 - (Show tips -- DEPRECATED)
-// 16 - Show sync status
-const char kNTPShownSections[] = "ntp.shown_sections";
-
-// This pref is used for migrating the prefs for the NTP
-const char kNTPPrefVersion[] = "ntp.pref_version";
-
 // Dates between which the NTP should show a custom logo rather than the
 // standard one.
 const char kNTPCustomLogoStart[] = "ntp.alt_logo_start";
 const char kNTPCustomLogoEnd[] = "ntp.alt_logo_end";
 
 // The promo resource service version number.
 const char kNTPPromoVersion[] = "ntp.promo_version";
 
 // The last locale the promo was fetched for.
 const char kNTPPromoLocale[] = "ntp.promo_locale";
@@ skipping 358 matching lines @@
 
 // String that represents the recovery component last downloaded version. This
 // takes the usual 'a.b.c.d' notation.
 const char kRecoveryComponentVersion[] = "recovery_component.version";
 
 // String that stores the component updater last known state. This is used for
 // troubleshooting.
 const char kComponentUpdaterState[] = "component_updater.state";
 
 }  // namespace prefs