chromeos: Remove wm_shelf_util.h

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")
 
 # Historical note: Ash shipped on Windows for a couple years to support
@@ skipping 292 matching lines @@
     "shelf/shelf_widget.h",
     "shelf/shelf_window_targeter.cc",
     "shelf/shelf_window_targeter.h",
     "shelf/shelf_window_watcher.cc",
     "shelf/shelf_window_watcher.h",
     "shelf/shelf_window_watcher_item_delegate.cc",
     "shelf/shelf_window_watcher_item_delegate.h",
     "shelf/wm_shelf.cc",
     "shelf/wm_shelf.h",
     "shelf/wm_shelf_observer.h",
-    "shelf/wm_shelf_util.cc",
-    "shelf/wm_shelf_util.h",
     "shell.cc",
     "shell.h",
     "shell_delegate.h",
     "shell_init_params.h",
     "shell_observer.h",
     "shell_port.cc",
     "shell_port.h",
     "shutdown_controller.cc",
     "shutdown_controller.h",
     "sticky_keys/sticky_keys_controller.cc",
@@ skipping 1167 matching lines @@
     "//content/public/app:both",
     "//device/bluetooth",
   ]
 
   data_deps = [
     "//ash/strings:ash_test_strings",
     "//ash/resources:ash_test_resources_with_content_100_percent",
     "//ash/resources:ash_test_resources_200_percent",
   ]
 }