Beginning work on GN build

build/linux/unbundle/libxslt.gn

Index: build/linux/unbundle/libxslt.gn
diff --git a/build/linux/unbundle/libxslt.gn b/build/linux/unbundle/libxslt.gn
new file mode 100644
index 0000000000000000000000000000000000000000..885574ef89f832e374606f49bf6b5b690dd60bff
--- /dev/null
+++ b/build/linux/unbundle/libxslt.gn
@@ -0,0 +1,13 @@
+# 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")
+
+pkg_config("system_libxslt") {
+  packages = [ "libxslt" ]
+}
+
+source_set("libxslt") {
+  public_configs = [ ":system_libxslt" ]
+}