ntp: remove ShownSectionHandler and all references to it

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'dependencies': [
@@ skipping 3765 matching lines @@
         'browser/ui/webui/ntp/new_tab_ui.cc',
         'browser/ui/webui/ntp/new_tab_ui.h',
         'browser/ui/webui/ntp/ntp_login_handler.cc',
         'browser/ui/webui/ntp/ntp_login_handler.h',
         'browser/ui/webui/ntp/ntp_resource_cache.cc',
         'browser/ui/webui/ntp/ntp_resource_cache.h',
         'browser/ui/webui/ntp/ntp_resource_cache_factory.cc',
         'browser/ui/webui/ntp/ntp_resource_cache_factory.h',
         'browser/ui/webui/ntp/recently_closed_tabs_handler.cc',
         'browser/ui/webui/ntp/recently_closed_tabs_handler.h',
-        'browser/ui/webui/ntp/shown_sections_handler.cc',
-        'browser/ui/webui/ntp/shown_sections_handler.h',
         'browser/ui/webui/ntp/thumbnail_source.cc',
         'browser/ui/webui/ntp/thumbnail_source.h',
         'browser/ui/webui/options/advanced_options_handler.cc',
         'browser/ui/webui/options/advanced_options_handler.h',
         'browser/ui/webui/options/advanced_options_utils.h',
         'browser/ui/webui/options/advanced_options_utils_mac.mm',
         'browser/ui/webui/options/advanced_options_utils_win.cc',
         'browser/ui/webui/options/advanced_options_utils_x11.cc',
         'browser/ui/webui/options/autofill_options_handler.cc',
         'browser/ui/webui/options/autofill_options_handler.h',
@@ skipping 1445 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/history/in_memory_url_index_cache.proto' ],
       'variables': {
         'proto_in_dir': 'browser/history',
         'proto_out_dir': 'chrome/browser/history',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }