Remove the code added to make extensions compile on Aura Android.

chrome/chrome_browser_extensions.gypi

 # Copyright (c) 2013 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': {
     'chrome_browser_extensions_chromeos_sources': [
       'browser/extensions/api/cast_devices_private/cast_devices_private_api.cc',
       'browser/extensions/api/cast_devices_private/cast_devices_private_api.h',
       'browser/extensions/api/certificate_provider/certificate_provider_api.cc',
@@ skipping 50 matching lines @@
       'browser/extensions/updater/local_extension_cache.h',
     ],
     'chrome_browser_extensions_non_chromeos_sources': [
       'browser/extensions/api/easy_unlock_private/easy_unlock_private_crypto_delegate_stub.cc',
       'browser/extensions/api/image_writer_private/operation_nonchromeos.cc',
       'browser/extensions/api/image_writer_private/removable_storage_provider_linux.cc',
       'browser/extensions/api/messaging/native_message_process_host.cc',
       'browser/extensions/api/messaging/native_message_process_host.h',
       'browser/extensions/api/messaging/native_process_launcher.cc',
       'browser/extensions/api/messaging/native_process_launcher.h',
-      'browser/extensions/api/messaging/native_process_launcher_android.cc',
       'browser/extensions/api/messaging/native_process_launcher_posix.cc',
       'browser/extensions/api/messaging/native_process_launcher_win.cc',
     ],
     'chrome_browser_extensions_service_discovery_sources': [
       'browser/extensions/api/gcd_private/gcd_private_api.cc',
       'browser/extensions/api/gcd_private/gcd_private_api.h',
       'browser/extensions/api/gcd_private/privet_v3_context_getter.cc',
       'browser/extensions/api/gcd_private/privet_v3_context_getter.h',
       'browser/extensions/api/gcd_private/privet_v3_session.cc',
       'browser/extensions/api/gcd_private/privet_v3_session.h',
@@ skipping 1091 matching lines @@
           ],
         }, {  # use_brlapi==0
           'sources': [
             'browser/extensions/api/braille_display_private/braille_controller_stub.cc',
           ],
         }],
       ],
     },
   ],
 }