Fixes build breakage

ash/BUILD.gn

Index: ash/BUILD.gn
diff --git a/ash/BUILD.gn b/ash/BUILD.gn
index 17a1760863b5fa0758df6336472fb23eb046d68a..723a15dc52d7dd1a02bc79dc57ccdda67b0db8f2 100644
--- a/ash/BUILD.gn
+++ b/ash/BUILD.gn
@@ -416,7 +416,14 @@ component("ash") {
     "common/system/web_notification/ash_popup_alignment_delegate.h",
     "common/system/web_notification/web_notification_tray.cc",
     "common/system/web_notification/web_notification_tray.h",
+    "common/wallpaper/wallpaper_controller.cc",
+    "common/wallpaper/wallpaper_controller.h",
+    "common/wallpaper/wallpaper_controller_observer.h",
     "common/wallpaper/wallpaper_delegate.h",
+    "common/wallpaper/wallpaper_view.cc",
+    "common/wallpaper/wallpaper_view.h",
+    "common/wallpaper/wallpaper_widget_controller.cc",
+    "common/wallpaper/wallpaper_widget_controller.h",
     "common/wm/always_on_top_controller.cc",
     "common/wm/always_on_top_controller.h",
     "common/wm/background_animator.cc",
@@ -712,13 +719,6 @@ component("ash") {
     "utility/screenshot_controller.h",
     "virtual_keyboard_controller.cc",
     "virtual_keyboard_controller.h",
-    "wallpaper/wallpaper_controller.cc",
-    "wallpaper/wallpaper_controller.h",
-    "wallpaper/wallpaper_controller_observer.h",
-    "wallpaper/wallpaper_view.cc",
-    "wallpaper/wallpaper_view.h",
-    "wallpaper/wallpaper_widget_controller.cc",
-    "wallpaper/wallpaper_widget_controller.h",
     "wm/ash_focus_rules.cc",
     "wm/ash_focus_rules.h",
     "wm/ash_native_cursor_manager.cc",
@@ -1394,6 +1394,7 @@ test("ash_unittests") {
     "common/system/tray/tray_details_view_unittest.cc",
     "common/system/update/tray_update_unittest.cc",
     "common/system/user/tray_user_unittest.cc",
+    "common/wallpaper/wallpaper_controller_unittest.cc",
     "common/wm/container_finder_unittest.cc",
     "common/wm/overview/cleanup_animation_observer_unittest.cc",
     "common/wm/workspace/workspace_event_handler_test_helper.cc",
@@ -1455,7 +1456,6 @@ test("ash_unittests") {
     "touch/touchscreen_util_unittest.cc",
     "utility/screenshot_controller_unittest.cc",
     "virtual_keyboard_controller_unittest.cc",
-    "wallpaper/wallpaper_controller_unittest.cc",
     "wm/always_on_top_controller_unittest.cc",
     "wm/ash_focus_rules_unittest.cc",
     "wm/ash_native_cursor_manager_unittest.cc",