GN rules for everything in //mojo

mojo/examples/aura_demo/BUILD.gn

+# Copyright 2014 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/system.gni")
+
+assert(use_aura)
+
+# GYP version mojo/mojo_examples.gypi:mojo_aura_demo
+shared_library("mojo_aura_demo") {
+  output_name = "mojo_aura_demo"
+
+  sources = [
+    "aura_demo.cc"
+  ]
+
+  deps = [
+    "//base",
+    "//cc",
+    "//ui/aura",
+    "//ui/base",
+    "//ui/compositor",
+    "//ui/gfx",
+    "//ui/gfx/geometry",
+    "//mojo/application",
+    "//mojo/common",
+    "//mojo/aura",
+    "//mojo/services/public/interfaces/geometry",
+    "//mojo/services/public/cpp/geometry",
+    "//mojo/services/public/cpp/view_manager",
+  ] + mojo_system_for_shared_library
+
+  datadeps = [ ":init" ]
+}
+
+# GYP version mojo/mojo_examples.gypi:mojo_aura_demo_init
+shared_library("init") {
+  output_name = "mojo_aura_demo_init"
+
+  sources = [
+    "view_manager_init.cc",
+  ]
+
+  deps = [
+    "//base",
+    "//mojo/application",
+    "//mojo/services/public/interfaces/view_manager",
+  ] + mojo_system_for_shared_library
+}