Fix missing headers about vpn service

chrome/browser/ui/ash/system_tray_client.cc

Index: chrome/browser/ui/ash/system_tray_client.cc
diff --git a/chrome/browser/ui/ash/system_tray_client.cc b/chrome/browser/ui/ash/system_tray_client.cc
index f3cedfecf19d11d4a2ba913c25f7824d59888f7f..edd04026b86e507dfe55aba376ceb35e48938aad 100644
--- a/chrome/browser/ui/ash/system_tray_client.cc
+++ b/chrome/browser/ui/ash/system_tray_client.cc
@@ -44,8 +44,6 @@
 #include "content/public/browser/notification_service.h"
 #include "content/public/common/service_manager_connection.h"
 #include "device/bluetooth/bluetooth_device.h"
-#include "extensions/browser/api/vpn_provider/vpn_service.h"
-#include "extensions/browser/api/vpn_provider/vpn_service_factory.h"
 #include "net/base/escape.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/ui/public/cpp/property_type_converters.h"
@@ -54,6 +52,11 @@
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/dialog_delegate.h"
 
+#if defined(OS_CHROMEOS)

[jam, 2017/05/01 21:23:19]

system_tray_client.cc is only in chromeos builds, so it doesn't make sense that
we have this check?

https://cs.chromium.org/chromium/src/chrome/browser/ui/BUILD.gn?rcl=77654fd14...

[wychen, 2017/05/01 23:18:21]

Done.

+#include "extensions/browser/api/vpn_provider/vpn_service.h"
+#include "extensions/browser/api/vpn_provider/vpn_service_factory.h"
+#endif  // defined(OS_CHROMEOS)
+
 using chromeos::BluetoothPairingDialog;
 using chromeos::DBusThreadManager;
 using chromeos::LoginState;