Prompt for granting permission to access USB devices.

extensions/extensions.gyp

 # Copyright 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': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 396 matching lines @@
         'browser/api/declarative_webrequest/webrequest_condition.cc',
         'browser/api/declarative_webrequest/webrequest_condition.h',
         'browser/api/declarative_webrequest/webrequest_condition_attribute.cc',
         'browser/api/declarative_webrequest/webrequest_condition_attribute.h',
         'browser/api/declarative_webrequest/webrequest_constants.cc',
         'browser/api/declarative_webrequest/webrequest_constants.h',
         'browser/api/declarative_webrequest/webrequest_rules_registry.cc',
         'browser/api/declarative_webrequest/webrequest_rules_registry.h',
         'browser/api/device_permissions_manager.cc',
         'browser/api/device_permissions_manager.h',
+        'browser/api/device_permissions_prompt.cc',
+        'browser/api/device_permissions_prompt.h',
         'browser/api/dns/dns_api.cc',
         'browser/api/dns/dns_api.h',
         'browser/api/dns/host_resolver_wrapper.cc',
         'browser/api/dns/host_resolver_wrapper.h',
         'browser/api/execute_code_function.cc',
         'browser/api/execute_code_function.h',
         'browser/api/extensions_api_client.cc',
         'browser/api/extensions_api_client.h',
         'browser/api/hid/hid_api.cc',
         'browser/api/hid/hid_api.h',
@@ skipping 763 matching lines @@
       'conditions': [
         ['OS=="win" and win_use_allocator_shim==1', {
           'dependencies': [
             '../base/allocator/allocator.gyp:allocator',
           ],
         }],
       ],
     },
   ]
 }