Revert of [Service Manager] Get rid of dynamic service discovery

services/ui/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("//testing/test.gni")
 import("//services/service_manager/public/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
+import("//services/service_manager/public/constants.gni")
 import("//tools/grit/repack.gni")
 
 group("all") {
   testonly = true
   deps = [
     ":ui",
     "//services/ui/ime/test_ime_driver",
     "//services/ui/test_wm",
   ]
 }
 
 service("ui") {
   sources = [
     "main.cc",
   ]
 
   deps = [
+    ":copy_gl_libraries",
     ":lib",
+    ":resources_100",
+    ":resources_200",
+    ":resources_strings",
     "//services/service_manager/public/cpp:sources",
     "//services/tracing/public/interfaces",
   ]
 
   data_deps = [
+    ":copy_gl_libraries",
     ":manifest",
-    ":resources_100",
-    ":resources_200",
-    ":resources_strings",
     "//services/ui/ime/test_ime_driver",
   ]
+
+  resources = [
+    "$root_out_dir/mus_app_resources_strings.pak",
+    "$root_out_dir/mus_app_resources_100.pak",
+    "$root_out_dir/mus_app_resources_200.pak",
+  ]
 }
 
 service_manifest("manifest") {
   name = "ui"
   source = "manifest.json"
 }
 
+copy("copy_gl_libraries") {
+  deps = [
+    "//third_party/mesa:osmesa",
+  ]
+
+  if (is_win) {
+    deps += [
+      "//third_party/angle:libEGL",
+      "//third_party/angle:libGLESv2",
+    ]
+
+    sources = [
+      "$root_shlib_dir/libEGL.dll",
+      "$root_shlib_dir/libGLESv2.dll",
+      "$root_shlib_dir/osmesa.dll",
+    ]
+  } else if (is_android || is_linux) {
+    sources = [
+      "$root_shlib_dir/libosmesa.so",
+    ]
+  } else {
+    sources = []
+  }
+
+  outputs = [
+    "$root_out_dir/$packages_directory/ui/{{source_file_part}}",
+  ]
+}
+
 source_set("lib") {
   sources = [
     "service.cc",
     "service.h",
   ]
 
   public_deps = [
     "//services/ui/common:mus_common",
   ]
   deps = [
@@ skipping 55 matching lines @@
 
 repack("resources_200") {
   sources = [
     "$root_gen_dir/ui/resources/ui_resources_200_percent.pak",
   ]
   output = "$root_out_dir/mus_app_resources_200.pak"
   deps = [
     "//ui/resources",
   ]
 }