GN: Remove duplicate entries from sources lists

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/diagnostics/diagnostics_api.cc',
       'browser/extensions/api/diagnostics/diagnostics_api.h',
       'browser/extensions/api/diagnostics/diagnostics_api_chromeos.cc',
@@ skipping 902 matching lines @@
       'browser/apps/drive/drive_app_mapping.cc',
       'browser/apps/drive/drive_app_mapping.h',
       'browser/apps/drive/drive_app_provider.cc',
       'browser/apps/drive/drive_app_provider.h',
       'browser/apps/drive/drive_service_bridge.cc',
       'browser/apps/drive/drive_service_bridge.h',
     ],
     'chrome_browser_extensions_networking_private_sources': [
       'browser/extensions/api/networking_private/crypto_verify_impl.cc',
       'browser/extensions/api/networking_private/crypto_verify_impl.h',
-      'browser/extensions/api/networking_private/networking_private_api.h',
       'browser/extensions/api/networking_private/networking_private_credentials_getter.h',
       'browser/extensions/api/networking_private/networking_private_credentials_getter_mac.cc',
       'browser/extensions/api/networking_private/networking_private_credentials_getter_win.cc',
-      'browser/extensions/api/networking_private/networking_private_event_router.h',
       'browser/extensions/api/networking_private/networking_private_event_router_nonchromeos.cc',
       'browser/extensions/api/networking_private/networking_private_service_client.cc',
       'browser/extensions/api/networking_private/networking_private_service_client.h',
       'browser/extensions/api/networking_private/networking_private_service_client_factory.cc',
       'browser/extensions/api/networking_private/networking_private_service_client_factory.h',
     ],
     'chrome_browser_extensions_brlapi_sources': [
       'browser/extensions/api/braille_display_private/braille_controller_brlapi.cc',
       'browser/extensions/api/braille_display_private/brlapi_connection.cc',
       'browser/extensions/api/braille_display_private/brlapi_connection.h',
@@ skipping 227 matching lines @@
           ],
         }, {  # use_brlapi==0
           'sources': [
             'browser/extensions/api/braille_display_private/braille_controller_stub.cc',
           ],
         }],
       ],
     },
   ],
 }