Fix extension link error on Android.

chrome/chrome_renderer.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'renderer',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 300 matching lines @@
             ['win_use_allocator_shim==1', {
               'dependencies': [
                 '<(allocator_target)',
               ],
               'export_dependent_settings': [
                 '<(allocator_target)',
               ],
             }],
           ],
         }],
-        ['OS=="android"', {
-          'sources!': [
-            'renderer/extensions/experimental.usb_custom_bindings.cc',
-            'renderer/extensions/experimental.usb_custom_bindings.h',
-            'renderer/resources/extensions/experimental.usb_custom_bindings.js',
-          ],
-        }],
       ],
     },
   ],
 }