[mus+ash] removes WmWindow, wm_window.h and wm_window.cc

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 802 matching lines @@
     "wm/workspace/workspace_event_handler_aura.cc",
     "wm/workspace/workspace_event_handler_aura.h",
     "wm/workspace/workspace_layout_manager.cc",
     "wm/workspace/workspace_layout_manager.h",
     "wm/workspace/workspace_types.h",
     "wm/workspace/workspace_window_resizer.cc",
     "wm/workspace/workspace_window_resizer.h",
     "wm/workspace_controller.cc",
     "wm/workspace_controller.h",
     "wm_display_observer.h",
-    "wm_transient_window_observer.h",
-    "wm_window.cc",
-    "wm_window.h",
   ]
 
   configs += [ "//build/config:precompiled_headers" ]
   defines = [ "ASH_IMPLEMENTATION" ]
 
   public_deps = [
     "//ash/resources",
     "//ash/resources/vector_icons",
     "//ash/shared:app_types",
     "//ash/strings",
@@ skipping 691 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",
   ]
 }