[ew] Add basic classes.

chrome/chrome_browser.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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 438 matching lines @@
       'browser/favicon/favicon_handler.cc',
       'browser/favicon/favicon_handler.h',
       'browser/favicon/favicon_service.cc',
       'browser/favicon/favicon_service.h',
       'browser/favicon/favicon_service_factory.cc',
       'browser/favicon/favicon_service_factory.h',
       'browser/favicon/favicon_tab_helper.cc',
       'browser/favicon/favicon_tab_helper.h',
       'browser/file_select_helper.cc',
       'browser/file_select_helper.h',
+      'browser/file_system/entry_watcher_service.cc',
+      'browser/file_system/entry_watcher_service.h',
+      'browser/file_system/entry_watcher_service_factory.cc',
+      'browser/file_system/entry_watcher_service_factory.h',
       'browser/flags_storage.h',
       'browser/fullscreen.h',
       'browser/fullscreen_chromeos.cc',
       'browser/fullscreen_mac.mm',
       'browser/fullscreen_win.cc',
       'browser/geolocation/chrome_access_token_store.cc',
       'browser/geolocation/chrome_access_token_store.h',
       'browser/geolocation/geolocation_infobar_delegate.cc',
       'browser/geolocation/geolocation_infobar_delegate.h',
       'browser/geolocation/geolocation_permission_context.cc',
@@ skipping 3146 matching lines @@
             'package_name': 'org/chromium/chrome/browser',
             'template_deps': ['browser/android/tab_load_status.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }