Using PolicyServiceWatcher instead of PolicyWatcherLinux/Win/Mac.

remoting/host/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")
 import("//remoting/remoting_version.gni")
 
 static_library("host") {
   gypi_values = exec_script("//build/gypi_to_gn.py",
                             [ rebase_path("../remoting_host_srcs.gypi") ],
                             "scope",
                             [ "../remoting_host_srcs.gypi" ])
 
   sources = rebase_path(gypi_values.remoting_host_sources, ".", "//remoting")
 
   libs = []
 
   configs += [ "//build/config/compiler:wexit_time_destructors" ]
 
   defines = [ "WEBRTC_CHROMIUM_BUILD" ]
 
   deps = [
     "//base:i18n",
     "//components/policy:policy",
+    "//components/policy:policy_component_common",
     "//crypto",
     "//google_apis",
     "//ipc",
     "//remoting/base",
     "//remoting/protocol",
     "//remoting/resources",
     "//ui/events/platform",
     "//ui/events:dom4_keycode_converter",
   ]
 
@@ skipping 10 matching lines @@
     sources -= [
       "clipboard_x11.cc",
       "linux/x_server_clipboard.cc",
       "linux/x_server_clipboard.h",
     ]
   }
 
   if (is_chromeos) {
     deps += [
       "//cc",
-      "//components/policy:policy_component_common",
       "//content",
       "//ppapi:ppapi_host",
       "//skia",
       "//ui/aura",
       "//ui/compositor",
       "//ui/events",
       "//ui/views",
     ]
 
     if (use_ash) {
@@ skipping 10 matching lines @@
         "input_injector_chromeos.h",
         "linux/x_server_clipboard.cc",
         "linux/x_server_clipboard.h",
       ]
     }
 
     sources -= [
       "continue_window_linux.cc",
       "disconnect_window_linux.cc",
       "local_input_monitor_x11.cc",
-      "policy_hack/policy_watcher_linux.cc",
       "remoting_me2me_host.cc",
     ]
   }
 
   if (is_mac) {
     defines += [
       "HOST_BUNDLE_NAME=\"$host_bundle_name\"",
       "PREFPANE_BUNDLE_NAME=\"$prefpane_bundle_name\"",
     ]
 
     libs += [
       "Accelerate.framework",
       "libpam.a",
     ]
 
     deps += [ "//google_toolbox_for_mac" ]
   }
 
   if (enable_webrtc) {
     deps += [
       "//third_party/libjingle:libpeerconnection",
       "//third_party/webrtc/modules/desktop_capture",
     ]
 
     sources += rebase_path(gypi_values.remoting_cast_sources, ".", "//remoting")
   }
 }