Revert of Cros Tablet Window management - Split Screen part II

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 663 matching lines @@
     "wm/native_cursor_manager_ash.h",
     "wm/native_cursor_manager_ash_classic.cc",
     "wm/native_cursor_manager_ash_classic.h",
     "wm/native_cursor_manager_ash_mus.cc",
     "wm/native_cursor_manager_ash_mus.h",
     "wm/overlay_event_filter.cc",
     "wm/overlay_event_filter.h",
     "wm/overview/cleanup_animation_observer.cc",
     "wm/overview/cleanup_animation_observer.h",
     "wm/overview/overview_animation_type.h",
-    "wm/overview/overview_window_drag_controller.cc",
-    "wm/overview/overview_window_drag_controller.h",
     "wm/overview/scoped_overview_animation_settings.cc",
     "wm/overview/scoped_overview_animation_settings.h",
     "wm/overview/scoped_transform_overview_window.cc",
     "wm/overview/scoped_transform_overview_window.h",
     "wm/overview/window_grid.cc",
     "wm/overview/window_grid.h",
     "wm/overview/window_selector.cc",
     "wm/overview/window_selector.h",
     "wm/overview/window_selector_controller.cc",
     "wm/overview/window_selector_controller.h",
@@ skipping 871 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",
   ]
 }