Revert of Replaced BackgroundAnimator with ShelfBackgroundAnimator.

ash/test/material_design_controller_test_api.cc

+// Copyright 2016 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.
+
+#include "ash/test/material_design_controller_test_api.h"
+
+namespace ash {
+namespace test {
+
+MaterialDesignControllerTestAPI::MaterialDesignControllerTestAPI(
+    MaterialDesignController::Mode mode)
+    : previous_mode_(MaterialDesignController::mode()) {
+  MaterialDesignController::SetMode(mode);
+}
+
+MaterialDesignControllerTestAPI::~MaterialDesignControllerTestAPI() {
+  MaterialDesignController::SetMode(previous_mode_);
+}
+
+// static
+bool MaterialDesignControllerTestAPI::IsMaterial() {
+  return MaterialDesignController::IsMaterial();
+}
+
+// static
+bool MaterialDesignControllerTestAPI::IsMaterialNormal() {
+  return MaterialDesignController::IsMaterialNormal();
+}
+
+// static
+bool MaterialDesignControllerTestAPI::IsMaterialExperimental() {
+  return MaterialDesignController::IsMaterialExperimental();
+}
+
+// static
+MaterialDesignController::Mode MaterialDesignControllerTestAPI::DefaultMode() {
+  return MaterialDesignController::DefaultMode();
+}
+
+// static
+void MaterialDesignControllerTestAPI::Uninitialize() {
+  MaterialDesignController::Uninitialize();
+}
+
+}  // namespace test
+}  // namespace ash