Fix Asteroids game to paint again and give it an icon.

sky/sdk/example/game/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("//sky/build/sky_app.gni")
 
 sky_app("game") {
   main_dart = "main.dart"
   manifest = "sky.yaml"
 
   if (is_android) {
     apk_name = "Asteroids"
+
+    deps = [
+      "//sky/sdk/example/game/apk:resources",
+    ]
   }
 }