Initial native keyboard proof of concept.

examples/keyboard_client/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("//mojo/public/mojo_application.gni")
 
-mojo_native_application("echo_terminal") {
+mojo_native_application("keyboard_client") {
+  sources = [
+    "keyboard_client.cc",
+  ]
+
   deps = [
     "//base",
-    "//mojo/application",
-    "//mojo/common",
-    "//mojo/public/cpp/application",
-    "//mojo/public/cpp/system",
-    "//mojo/services/terminal/public/interfaces",
-  ]
-
-  sources = [
-    "main.cc",
+    "//mojo/public/cpp/application:standalone",
+    "//mojo/services/keyboard/public/interfaces",
   ]
 }