sky/shell should link with sky/engine

sky/shell/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.
 
 assert(is_android)
 
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 
 group("shell") {
@@ skipping 11 matching lines @@
 }
 
 shared_library("sky_shell") {
   sources = [
     "gpu/ganesh_context.cc",
     "gpu/ganesh_context.h",
     "gpu/ganesh_surface.cc",
     "gpu/ganesh_surface.h",
     "gpu/rasterizer.cc",
     "gpu/rasterizer.h",
+    "ui/engine.cc",
+    "ui/engine.h",
+    "ui/platform_impl.cc",
+    "ui/platform_impl.h",
     "library_loader.cc",
     "shell.cc",
     "shell.h",
     "sky_main.cc",
     "sky_main.h",
     "sky_view.cc",
     "sky_view.h",
   ]
 
-  configs += [ "//third_party/khronos:khronos_headers" ]
-
   deps = [
     "//base",
     "//build/config/sanitizers:deps",
+    "//mojo/edk/system",
     "//skia",
+    "//sky/engine",
     "//ui/gfx/geometry",
     "//ui/gl",
     ":jni_headers",
   ]
 }
 
 android_library("java") {
   java_files = [
     "apk/src/org/domokit/sky/shell/SkyMain.java",
     "apk/src/org/domokit/sky/shell/SkyShellActivity.java",
@@ skipping 19 matching lines @@
 
   asset_location = "apk/res"
 
   deps = [
     ":sky_shell",
     ":java",
     ":resources",
     "//base:base_java",
   ]
 }