Fix a wrong dependency in ash/BUILD.gn

ash/BUILD.gn

 # Copyright 2014 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/features.gni")
 import("//build/config/ui.gni")
 
 gypi_values = exec_script(
     "//build/gypi_to_gn.py",
     [ rebase_path("ash.gyp") ],
@@ skipping 338 matching lines @@
   if (is_win) {
     configs -= [ "//build/config/win:console" ]
     configs += [ "//build/config/win:windowed" ]
     deps += [
       "//sandbox",
     ]
   }
 
   if (is_chromeos) {
     deps += [
-      "../device/bluetooth/bluetooth.gyp:device_bluetooth",
+      "//device/bluetooth",
     ]
   }
 }
 
 test("ash_shell_unittests") {
   sources = [
     "shell/window_watcher_unittest.cc",
     "test/ash_unittests.cc",
   ]
 
   deps = [
     ":ash_shell_lib",
     ":test_support",
     "//base/test:test_support",
     "//components/user_manager",
     "//content/test:test_support",
     "//skia",
     "//testing/gtest",
     "//ui/accessibility",
   ]
 
   if (is_chromeos) {
     deps += [ "//ui/display" ]
   }
 }