Move //chrome/browser/{chromeos => ash}/customization

This CL is part of the Chrome OS source code directory migration:
https://docs.google.com/document/d/1g-98HpzA8XcoGBWUv1gQNr4rbnD5yfvbtYZyPDDbkaE.

Bug: 1164001
Change-Id: I4c63c798e28fdff40578b95ab088b78c98c1dd16
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2831035
Reviewed-by: Hidehiko Abe <[email protected]>
Owners-Override: Hidehiko Abe <[email protected]>
Commit-Queue: Yeunjoo Choi <[email protected]>
Cr-Commit-Position: refs/heads/master@{#873277}
diff --git a/chrome/browser/extensions/external_provider_impl.cc b/chrome/browser/extensions/external_provider_impl.cc
index 356a6f5..81eeed5 100644
--- a/chrome/browser/extensions/external_provider_impl.cc
+++ b/chrome/browser/extensions/external_provider_impl.cc
@@ -55,10 +55,10 @@
 #include "ash/constants/ash_paths.h"
 #include "base/path_service.h"
 #include "chrome/browser/ash/app_mode/kiosk_app_external_loader.h"
+#include "chrome/browser/ash/customization/customization_document.h"
 #include "chrome/browser/ash/login/demo_mode/demo_extensions_external_loader.h"
 #include "chrome/browser/ash/login/demo_mode/demo_session.h"
 #include "chrome/browser/ash/profiles/profile_helper.h"
-#include "chrome/browser/chromeos/customization/customization_document.h"
 #include "chrome/browser/chromeos/extensions/device_local_account_external_policy_loader.h"
 #include "chrome/browser/chromeos/extensions/signin_screen_extensions_external_loader.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"