Make it possible to disable dbus on linux

net/net.gyp

 # Copyright 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': {
     'chromium_code': 1,
 
     'linux_link_kerberos%': 0,
     'use_simple_cache_backend%': 0,
@@ skipping 1271 matching lines @@
             'include_dirs': [
               '../third_party/openssl',
             ],
           }, {  # else OS != "android"
             'defines': [
               # These are the features Android doesn't support.
               'ENABLE_MEDIA_CODEC_THEORA',
             ],
           },
         ],
-        [ 'OS == "linux"', {
+        [ 'OS == "linux" and use_dbus == 1', {
             'dependencies': [
               '../build/linux/system.gyp:dbus',
               '../dbus/dbus.gyp:dbus',
             ],
           },
         ],
       ],
       'target_conditions': [
         # These source files are excluded by default platform rules, but they
         # are needed in specific cases on other platforms. Re-including them can
@@ skipping 537 matching lines @@
                   'http/http_network_transaction_spdy2_unittest.cc',
                   'http/http_network_transaction_spdy3_unittest.cc',
 
                   # These tests crash when run with coverage turned on:
                   # http://crbug.com/177203
                   'proxy/proxy_service_unittest.cc',
                 ],
               }],
             ],
         }],
-        [ 'OS == "linux"', {
+        [ 'OS == "linux" and use_dbus == 1', {
             'dependencies': [
               '../build/linux/system.gyp:dbus',
               '../dbus/dbus.gyp:dbus_test_support',
             ],
           },
         ],
         [ 'OS == "android"', {
             'dependencies': [
               '../third_party/openssl/openssl.gyp:openssl',
             ],
@@ skipping 698 matching lines @@
                 '--result', '<@(_outputs)',
                 '--isolate', 'net_unittests.isolate',
               ],
             },
           ],
         },
       ],
     }],
   ],
 }