Offline state detection for linux, using new D-Bus library.

net/net.gyp

Index: net/net.gyp
diff --git a/net/net.gyp b/net/net.gyp
index 628bb6916a58f94173517f68a6503c9fa0dd18bd..e0b467c8cf62a54195beeea41a44e4a6b77dcf56 100644
--- a/net/net.gyp
+++ b/net/net.gyp
@@ -939,6 +939,13 @@
             ],
           },
         ],
+        [ 'OS == "linux"', {
+            'dependencies': [
+              '../build/linux/system.gyp:dbus',
+              '../dbus/dbus.gyp:dbus',
+            ],
+          },
+        ],
       ],
     },
     {
@@ -989,6 +996,7 @@
         'base/net_log_unittest.cc',
         'base/net_log_unittest.h',
         'base/net_util_unittest.cc',
+        'base/network_change_notifier_linux_unittest.cc',
         'base/network_change_notifier_win_unittest.cc',
         'base/origin_bound_cert_service_unittest.cc',
         'base/pem_tokenizer_unittest.cc',
@@ -1224,6 +1232,13 @@
             ],
           },
         ],
+        [ 'OS == "linux"', {
+            'dependencies': [
+              '../build/linux/system.gyp:dbus',
+              '../dbus/dbus.gyp:dbus_test_support',
+            ],
+          },
+        ],
       ],
     },
     {