Converts ash to use aura-mus

ash/mus/bridge/wm_window_mus_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/mus/bridge/wm_window_mus_test_api.h"
+
+namespace ash {
+namespace mus {
+
+// static
+int WmWindowMusTestApi::GlobalMinimumSizeLock::instance_count_ = 0;
+
+WmWindowMusTestApi::GlobalMinimumSizeLock::GlobalMinimumSizeLock() {
+  if (instance_count_ == 0)
+    WmWindowMusTestApi::SetDefaultUseEmptyMinimumSizeForTesting(true);
+  instance_count_++;
+}
+
+WmWindowMusTestApi::GlobalMinimumSizeLock::~GlobalMinimumSizeLock() {
+  DCHECK_GT(instance_count_, 0);
+  instance_count_--;
+  if (instance_count_ == 0)
+    WmWindowMusTestApi::SetDefaultUseEmptyMinimumSizeForTesting(false);
+}
+
+// static
+void WmWindowMusTestApi::SetDefaultUseEmptyMinimumSizeForTesting(bool value) {
+  WmWindowMus::default_use_empty_minimum_size_for_testing_ = value;
+}
+
+}  // namespace mus
+}  // namespace ash