Remove //mojo/platform_handle

services/user/BUILD.gn

 # Copyright 2016 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/public/mojo_application.gni")
 import("//mojo/public/mojo_application_manifest.gni")
 
 source_set("lib") {
   sources = [
     "user_id_map.cc",
     "user_id_map.h",
     "user_service.cc",
     "user_service.h",
     "user_shell_client.cc",
     "user_shell_client.h",
   ]
 
   deps = [
     "//base",
     "//components/filesystem:lib",
     "//components/filesystem/public/interfaces",
     "//components/leveldb:lib",
     "//components/leveldb/public/interfaces",
     "//mojo/common",
     "//mojo/common:common_base",
-    "//mojo/platform_handle",
     "//services/shell/public/cpp",
     "//services/shell/public/interfaces",
     "//services/tracing/public/cpp",
     "//services/user/public/interfaces",
     "//url",
   ]
 
   data_deps = [
     ":manifest",
   ]
 }
 
 mojo_application_manifest("manifest") {
   application_name = "user"
   source = "manifest.json"
 }