Resurrect the cloud printer driver.

cloud_print/virtual_driver/win/BUILD.gn

Index: cloud_print/virtual_driver/win/BUILD.gn
diff --git a/cloud_print/virtual_driver/win/BUILD.gn b/cloud_print/virtual_driver/win/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..8ae7b783f70cb9fd41f572fddb88bfe1788dc881
--- /dev/null
+++ b/cloud_print/virtual_driver/win/BUILD.gn
@@ -0,0 +1,19 @@
+# Copyright 2015 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.
+
+assert(is_win)
+
+source_set("win") {
+  sources = [
+    "virtual_driver_consts.cc",
+    "virtual_driver_consts.h",
+    "virtual_driver_helpers.cc",
+    "virtual_driver_helpers.h",
+  ]
+
+  deps = [
+    "//base",
+    "//cloud_print/common",
+  ]
+}