Remove unused ArcUserDataService.

components/arc/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("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 static_library("arc") {
   sources = [
     "arc_bridge_host_impl.cc",
@@ skipping 46 matching lines @@
     "metrics/arc_metrics_service.cc",
     "metrics/arc_metrics_service.h",
     "net/arc_net_host_impl.cc",
     "net/arc_net_host_impl.h",
     "obb_mounter/arc_obb_mounter_bridge.cc",
     "obb_mounter/arc_obb_mounter_bridge.h",
     "power/arc_power_bridge.cc",
     "power/arc_power_bridge.h",
     "storage_manager/arc_storage_manager.cc",
     "storage_manager/arc_storage_manager.h",
-    "user_data/arc_user_data_service.cc",
-    "user_data/arc_user_data_service.h",
   ]
 
   public_deps = [
     ":arc_base",
   ]
 
   deps = [
     "//ash:ash",
     "//ash/public/interfaces",
     "//base",
@@ skipping 149 matching lines @@
     "//testing/gtest",
     "//ui/aura",
     "//ui/aura:test_support",
     "//ui/base:test_support",
     "//ui/base/ime",
     "//ui/events",
     "//ui/events:dom_keycode_converter",
     "//url:url",
   ]
 }