Android: Eliminate sync_file_system extensions code.

chrome/common/extensions/api/api.gyp

 # Copyright (c) 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.
 
 {
   # All files are stored in these lists which are referenced in the target
   # below so that the GN build of this target can read in this dictionary and
   # duplicate the same logic without the lists getting out-of-sync. The GN
   # .gypi reader can not process conditions and does not know about targets,
   # etc., it just reads Python dictionaries.
   #
   # If you add a new category, also add it to the BUILD.gn file in this
   # directory.
   'variables': {
     # These duplicate other lists and are the only ones used on Android. They
     # should be eliminated. See crbug.com/305852.
     'android_schema_files': [
       'file_system.idl',
       'manifest_types.json',
-      'sync_file_system.idl',
     ],
 
     # These are used everywhere except Android.
     'main_schema_files': [
       'accessibility_private.json',
       'activity_log_private.json',
       'alarms.idl',
       'app_current_window_internal.idl',
       'app_window.idl',
       'audio.idl',
@@ skipping 193 matching lines @@
       'conditions': [
         ['chromeos==1', {
           'dependencies': [
             '<(DEPTH)/chrome/chrome.gyp:drive_proto',
           ],
         }],
       ],
     },
   ],
 }