Implement net in GN build.

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).
     # These files must not depend on files listed in sources list in the net
     # target.
     'net_nacl_common_sources' : [
       'base/address_family.h',
       'base/address_list.cc',
       'base/address_list.h',
       'base/auth.cc',
@@ skipping 1692 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',
     ],
   }
 }