Beginning work on GN build

build/config/linux/dbus/BUILD.gn

Index: build/config/linux/dbus/BUILD.gn
diff --git a/build/config/linux/dbus/BUILD.gn b/build/config/linux/dbus/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..a26ca92b5fcfdfd2b175d3cf5d481b75db4cadeb
--- /dev/null
+++ b/build/config/linux/dbus/BUILD.gn
@@ -0,0 +1,11 @@
+# Copyright 2016 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.
+
+import("//build/config/linux/pkg_config.gni")
+
+# Note: if your target also depends on //dbus, you don't need to add this
+# config (it will get added automatically if you depend on //dbus).
+pkg_config("dbus") {
+  packages = [ "dbus-1" ]
+}