GN rules for everything in //mojo

mojo/examples/compositor_app/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("//mojo/system.gni")
 
-# GYP version: mojo/mojo_examples.gypi:mojo_sample_app
-shared_library("sample_app") {
-  output_name = "mojo_sample_app"
+# GYP version mojo/mojo_examples.gypi:mojo_compositor_app
+shared_library("compositor_app") {
+  output_name = "mojo_compositor_app"
+
+  sources = [
+    "compositor_app.cc",
+    "compositor_host.cc",
+    "compositor_host.h",
+  ]
 
   deps = [
-    "//mojo/public/cpp/application:standalone",
-    "//mojo/public/cpp/bindings",
-    "//mojo/public/cpp/utility",
+    "//base",
+    "//cc",
+    "//mojo/application",
+    "//mojo/cc",
+    "//mojo/common",
+    "//mojo/services/public/cpp/geometry",
     "//mojo/services/public/interfaces/geometry",
+    "//mojo/services/public/interfaces/gpu",
     "//mojo/services/public/interfaces/native_viewport",
   ] + mojo_system_for_shared_library + mojo_gles2_for_shared_library
-
-  sources = [
-    "gles2_client_impl.cc",
-    "gles2_client_impl.h",
-    "sample_app.cc",
-    "spinning_cube.cc",
-    "spinning_cube.h"
-  ]
 }