Reland: chromeos: Convert ash VPNDelegate interface to mojo

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")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
 
 assert(use_aura)
@@ skipping 236 matching lines @@
     "common/system/chromeos/network/network_state_list_detailed_view.cc",
     "common/system/chromeos/network/network_state_list_detailed_view.h",
     "common/system/chromeos/network/tray_network.cc",
     "common/system/chromeos/network/tray_network.h",
     "common/system/chromeos/network/tray_network_state_observer.cc",
     "common/system/chromeos/network/tray_network_state_observer.h",
     "common/system/chromeos/network/tray_sms.cc",
     "common/system/chromeos/network/tray_sms.h",
     "common/system/chromeos/network/tray_vpn.cc",
     "common/system/chromeos/network/tray_vpn.h",
-    "common/system/chromeos/network/vpn_delegate.cc",
-    "common/system/chromeos/network/vpn_delegate.h",
+    "common/system/chromeos/network/vpn_list.cc",
+    "common/system/chromeos/network/vpn_list.h",
     "common/system/chromeos/network/vpn_list_view.cc",
     "common/system/chromeos/network/vpn_list_view.h",
     "common/system/chromeos/palette/common_palette_tool.cc",
     "common/system/chromeos/palette/common_palette_tool.h",
     "common/system/chromeos/palette/palette_ids.cc",
     "common/system/chromeos/palette/palette_ids.h",
     "common/system/chromeos/palette/palette_tool.cc",
     "common/system/chromeos/palette/palette_tool.h",
     "common/system/chromeos/palette/palette_tool_manager.cc",
     "common/system/chromeos/palette/palette_tool_manager.h",
@@ skipping 1240 matching lines @@
   if (is_win) {
     configs -= [ "//build/config/win:console" ]
     configs += [ "//build/config/win:windowed" ]
     deps += [ "//sandbox" ]
   }
 
   if (is_chromeos) {
     deps += [ "//device/bluetooth" ]
   }
 }