Move External Data policy handlers to separate directory

Bug: 970174
Change-Id: I619b97df55ff9d135b3bd3a99010771762b349d5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1657901
Commit-Queue: Nikita Podguzov <[email protected]>
Reviewed-by: Maksim Ivanov <[email protected]>
Reviewed-by: Denis Kuznetsov <[email protected]>
Reviewed-by: Lutz Justen <[email protected]>
Reviewed-by: Dominic Battré <[email protected]>
Cr-Commit-Position: refs/heads/master@{#669731}
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 85532a65..1b1f7dc 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -269,8 +269,8 @@
 #include "chrome/browser/chromeos/policy/auto_enrollment_client_impl.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
-#include "chrome/browser/chromeos/policy/device_wallpaper_image_external_data_handler.h"
 #include "chrome/browser/chromeos/policy/dm_token_storage.h"
+#include "chrome/browser/chromeos/policy/external_data_handlers/device_wallpaper_image_external_data_handler.h"
 #include "chrome/browser/chromeos/policy/policy_cert_service_factory.h"
 #include "chrome/browser/chromeos/policy/status_collector/device_status_collector.h"
 #include "chrome/browser/chromeos/policy/status_collector/status_collector.h"