Resurrect the cloud printer driver.

cloud_print/BUILD.gn

+# 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.
+
+import("//testing/test.gni")
+
+group("cloud_print") {
+  if (is_win) {
+    public_deps = [
+      "//cloud_print/virtual_driver/win/install:virtual_driver_setup",
+      "//cloud_print/virtual_driver/win/port_monitor",
+    ]
+
+    # When compiling 32-bit, also reference the 64-bit driver for installing on
+    # 64-bit systems.
+    if (target_cpu == "x86" && current_cpu == "x86") {
+      public_deps += [ "//cloud_print/virtual_driver/win/port_monitor(//build/toolchain/win:x64)" ]
+    }
+  }
+}
+
+test("cloud_print_unittests") {
+  sources = [
+    "virtual_driver/win/port_monitor/port_monitor_unittest.cc",
+  ]
+
+  deps = [
+    "//base",
+    "//base/test:run_all_unittests",
+    "//cloud_print/virtual_driver/win/port_monitor:lib",
+    "//testing/gmock",
+    "//testing/gtest",
+  ]
+
+  libs = [ "secur32.lib" ]
+}