Don't need to export an abstract interface.

net/net.gyp

 # Copyright (c) 2011 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,
 
     'linux_link_kerberos%': 0,
     'conditions': [
@@ skipping 620 matching lines @@
         'udp/datagram_socket.h',
         'udp/udp_client_socket.cc',
         'udp/udp_client_socket.h',
         'udp/udp_server_socket.cc',
         'udp/udp_server_socket.h',
         'udp/udp_socket.h',
         'udp/udp_socket_libevent.cc',
         'udp/udp_socket_libevent.h',
         'udp/udp_socket_win.cc',
         'udp/udp_socket_win.h',
-        'url_request/fraudulent_certificate_reporter.cc',
         'url_request/fraudulent_certificate_reporter.h',
         'url_request/url_request.cc',
         'url_request/url_request.h',
         'url_request/url_request_about_job.cc',
         'url_request/url_request_about_job.h',
         'url_request/url_request_context.cc',
         'url_request/url_request_context.h',
         'url_request/url_request_context_getter.cc',
         'url_request/url_request_context_getter.h',
         'url_request/url_request_context_storage.cc',
@@ skipping 949 matching lines @@
             'tools/dump_cache/url_to_filename_encoder.cc',
             'tools/dump_cache/url_to_filename_encoder.h',
             'tools/dump_cache/url_utilities.h',
             'tools/dump_cache/url_utilities.cc',
           ],
         },
       ],
     }],
   ],
 }