Apply new WM shadows to app list.

ui/app_list/BUILD.gn

Index: ui/app_list/BUILD.gn
diff --git a/ui/app_list/BUILD.gn b/ui/app_list/BUILD.gn
index 59413b53e05c3cb41a0bd6e462666be6f60cc187..53fc9cddf45a73ab288ed938c778a2a75a613eb7 100644
--- a/ui/app_list/BUILD.gn
+++ b/ui/app_list/BUILD.gn
@@ -99,8 +99,6 @@ component("app_list") {
     sources += [
       "views/all_apps_tile_item_view.cc",
       "views/all_apps_tile_item_view.h",
-      "views/app_list_background.cc",
-      "views/app_list_background.h",
       "views/app_list_drag_and_drop_host.h",
       "views/app_list_folder_view.cc",
       "views/app_list_folder_view.h",
@@ -112,7 +110,6 @@ component("app_list") {
       "views/app_list_page.h",
       "views/app_list_view.cc",
       "views/app_list_view.h",
-      "views/app_list_view_observer.h",
       "views/apps_container_view.cc",
       "views/apps_container_view.h",
       "views/apps_grid_view.cc",
@@ -218,15 +215,6 @@ if (toolkit_views) {
       "//ui/views_content_client",
       "//url",
     ]
-    if (is_win) {
-      configs -= [ "//build/config/win:console" ]
-      configs += [ "//build/config/win:windowed" ]
-
-      deps += [
-        "//content:sandbox_helper_win",
-        "//sandbox",
-      ]
-    }
   }
 }