Makes windowmanager draw non-client area

components/mus/example/wm/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("//build/config/ui.gni")
 import("//mojo/public/mojo_application.gni")
 import("//third_party/mojo/src/mojo/public/tools/bindings/mojom.gni")
 
 group("wm") {
   testonly = true
   deps = [
     ":example_wm",
     ":apptests",
   ]
 }
 
 source_set("example_wm_lib") {
   sources = [
     "background_layout.cc",
     "background_layout.h",
     "layout_manager.cc",
     "layout_manager.h",
     "move_loop.cc",
     "move_loop.h",
+    "non_client_frame_controller.cc",
+    "non_client_frame_controller.h",
+    "non_client_frame_view_impl.cc",
+    "non_client_frame_view_impl.h",
     "property_util.cc",
     "property_util.h",
     "shelf_layout.cc",
     "shelf_layout.h",
     "window_layout.cc",
     "window_layout.h",
     "window_manager_application.cc",
     "window_manager_application.h",
     "window_manager_impl.cc",
     "window_manager_impl.h",
   ]
 
   deps = [
     "//base",
     "//components/mus/example/wm/public/interfaces",
     "//components/mus/public/cpp",
     "//components/mus/public/interfaces",
     "//mojo/application/public/cpp",
     "//mojo/common:common_base",
     "//mojo/converters/geometry",
+    "//skia",
+    "//ui/views",
+    "//ui/views/mus",
   ]
 }
 
 mojo_native_application("example_wm") {
   sources = [
     "main.cc",
   ]
 
   deps = [
     ":example_wm_lib",
     "//mojo/application/public/cpp",
+    "//ui/views/mus:resources",
   ]
 
   data_deps = [
     "//components/mus",
   ]
+
+  resources = [ "$root_out_dir/views_mus_resources.pak" ]
 }
 
 mojo_native_application("apptests") {
   output_name = "mus_example_wm_apptests"
   testonly = true
 
   sources = [
     "window_manager_apptest.cc",
   ]
 
@@ skipping 36 matching lines @@
     "//testing/gtest",
     "//third_party/mojo/src/mojo/edk/system",
     "//third_party/mojo/src/mojo/public/cpp/system",
     "//ui/events",
     "//ui/gfx/geometry",
     "//ui/gfx:test_support",
     "//ui/mojo/geometry:interfaces",
     "//ui/mojo/geometry:util",
   ]
 }