Move ASCIIToWide and ASCIIToUTF16 to utf_string_conversions.h. I've found it...

net/net.gyp

 # Copyright (c) 2010 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 512 matching lines @@
         'spdy/spdy_settings_storage.h',
         'spdy/spdy_stream.cc',
         'spdy/spdy_stream.h',
         'spdy/spdy_transaction_factory.h',
         'url_request/https_prober.h',
         'url_request/https_prober.cc',
         '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_data_job.cc',
         'url_request/url_request_data_job.h',
         'url_request/url_request_error_job.cc',
         'url_request/url_request_error_job.h',
         'url_request/url_request_file_dir_job.cc',
         'url_request/url_request_file_dir_job.h',
         'url_request/url_request_file_job.cc',
         'url_request/url_request_file_job.h',
         'url_request/url_request_filter.cc',
@@ skipping 589 matching lines @@
       ],
     }],
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: