Remove old HTML app list start page.

chrome/chrome_browser_ui.gypi

 # Copyright 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.
 
 {
   'variables': {
     # There are two sections of sources:
     # * "Platform"-based sources (OS, toolkit, etc.)
     # * Feature/directory-based sources (e.g., history, printing)
 
@@ skipping 2353 matching lines @@
       'browser/ui/app_list/extension_uninstaller.h',
       'browser/ui/app_list/fast_show_pickler.cc',
       'browser/ui/app_list/fast_show_pickler.h',
       'browser/ui/app_list/launcher_page_event_dispatcher.cc',
       'browser/ui/app_list/launcher_page_event_dispatcher.h',
       'browser/ui/app_list/model_pref_updater.cc',
       'browser/ui/app_list/model_pref_updater.h',
       'browser/ui/app_list/profile_loader.cc',
       'browser/ui/app_list/profile_loader.h',
       'browser/ui/app_list/profile_store.h',
-      'browser/ui/app_list/recommended_apps.cc',
-      'browser/ui/app_list/recommended_apps.h',
-      'browser/ui/app_list/recommended_apps_observer.h',
       'browser/ui/app_list/search/app_result.cc',
       'browser/ui/app_list/search/app_result.h',
       'browser/ui/app_list/search/app_search_provider.cc',
       'browser/ui/app_list/search/app_search_provider.h',
       'browser/ui/app_list/search/common/json_response_fetcher.cc',
       'browser/ui/app_list/search/common/json_response_fetcher.h',
       'browser/ui/app_list/search/common/url_icon_source.cc',
       'browser/ui/app_list/search/common/url_icon_source.h',
       'browser/ui/app_list/search/common/webservice_cache.cc',
       'browser/ui/app_list/search/common/webservice_cache.h',
@@ skipping 734 matching lines @@
           ],
           'sources': [
             '<@(chrome_browser_ui_non_mobile_sources)',
             '<@(chrome_browser_ui_omnibox_non_mobile_sources)',
           ],
         }],
       ],
     },
   ],
 }