Add the ability for DevTools to wrap network transactions.

net/net.gypi

 # Copyright 2014 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.
 
 # This file is shared between the regular GYP build, the NaCl GYP build, and
 # the GN build. For GN support, it must have no conditionals or anything like
 # that beyond the simple one-level-deep dictionary of values.
 {
   'variables': {
     # Subset of net source files that are compiled for NaCl (net_nacl target).
@@ skipping 1358 matching lines @@
       'http/http_proxy_client_socket_pool_unittest.cc',
       'http/http_request_headers_unittest.cc',
       'http/http_response_body_drainer_unittest.cc',
       'http/http_response_headers_unittest.cc',
       'http/http_security_headers_unittest.cc',
       'http/http_server_properties_impl_unittest.cc',
       'http/http_status_code_unittest.cc',
       'http/http_stream_factory_impl_request_unittest.cc',
       'http/http_stream_factory_impl_unittest.cc',
       'http/http_stream_parser_unittest.cc',
-      'http/http_transaction_unittest.cc',
-      'http/http_transaction_unittest.h',
       'http/http_util_unittest.cc',
       'http/http_vary_data_unittest.cc',
       'http/mock_allow_url_security_manager.cc',
       'http/mock_allow_url_security_manager.h',
       'http/mock_gssapi_library_posix.cc',
       'http/mock_gssapi_library_posix.h',
       'http/mock_http_cache.cc',
       'http/mock_http_cache.h',
       'http/mock_sspi_library_win.cc',
       'http/mock_sspi_library_win.h',
@@ skipping 309 matching lines @@
       'tools/quic/test_tools/quic_test_client.h',
       'tools/quic/test_tools/quic_test_utils.cc',
       'tools/quic/test_tools/quic_test_utils.h',
       'tools/quic/test_tools/server_thread.h',
       'tools/quic/test_tools/server_thread.cc',
       'tools/quic/test_tools/simple_client.h',
       'tools/quic/test_tools/simple_client.cc',
     ],
   }
 }