Remove ash's MaterialDesignController.

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 188 matching lines @@
     "laser/laser_segment_utils.h",
     "link_handler_model.cc",
     "link_handler_model.h",
     "link_handler_model_factory.cc",
     "link_handler_model_factory.h",
     "login_status.h",
     "magnifier/magnification_controller.cc",
     "magnifier/magnification_controller.h",
     "magnifier/partial_magnification_controller.cc",
     "magnifier/partial_magnification_controller.h",
-    "material_design/material_design_controller.cc",
-    "material_design/material_design_controller.h",
     "media_controller.cc",
     "media_controller.h",
     "metrics/desktop_task_switch_metric_recorder.cc",
     "metrics/desktop_task_switch_metric_recorder.h",
     "metrics/gesture_action_type.h",
     "metrics/pointer_metrics_recorder.cc",
     "metrics/pointer_metrics_recorder.h",
     "metrics/task_switch_metrics_recorder.cc",
     "metrics/task_switch_metrics_recorder.h",
     "metrics/task_switch_source.h",
@@ skipping 1271 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",
   ]
 }