Add simplistic screenlock application.

mash/screenlock/BUILD.gn

Index: mash/screenlock/BUILD.gn
diff --git a/mash/screenlock/BUILD.gn b/mash/screenlock/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..b4bb0b0d1eccde54d7b6d87e06dfde8e71407c92
--- /dev/null
+++ b/mash/screenlock/BUILD.gn
@@ -0,0 +1,37 @@
+# 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/ui.gni")
+import("//mojo/public/mojo_application.gni")
+import("//mojo/public/tools/bindings/mojom.gni")
+import("//tools/grit/repack.gni")
+
+mojo_native_application("screenlock") {
+  sources = [
+    "main.cc",
+    "screenlock.cc",
+    "screenlock.h",
+  ]
+
+  deps = [
+    "//base",
+    "//components/mus/public/cpp",
+    "//mash/screenlock/public/interfaces",
+    "//mash/shell/public/interfaces",
+    "//mash/wm/public/interfaces",
+    "//mojo/common",
+    "//mojo/public/cpp/bindings",
+    "//mojo/services/tracing/public/cpp",
+    "//mojo/shell/public/cpp",
+    "//mojo/shell/public/cpp:sources",
+    "//ui/views",
+    "//ui/views/mus:for_mojo_application",
+  ]
+
+  resources = [ "$root_out_dir/views_mus_resources.pak" ]
+
+  data_deps = [
+    "//components/mus",
+  ]
+}