mus: Remove the old client lib.

services/ui/public/cpp/scoped_window_ptr.cc

-// Copyright 2015 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 "services/ui/public/cpp/scoped_window_ptr.h"
-
-#include "services/ui/public/cpp/window.h"
-#include "services/ui/public/cpp/window_observer.h"
-#include "services/ui/public/cpp/window_tree_client.h"
-
-namespace ui {
-
-ScopedWindowPtr::ScopedWindowPtr(Window* window) : window_(window) {
-  window_->AddObserver(this);
-}
-
-ScopedWindowPtr::~ScopedWindowPtr() {
-  if (window_)
-    DeleteWindowOrWindowManager(window_);
-  DetachFromWindow();
-}
-
-// static
-void ScopedWindowPtr::DeleteWindowOrWindowManager(Window* window) {
-  if (window->window_tree()->GetRoots().count(window) > 0)
-    delete window->window_tree();
-  else
-    window->Destroy();
-}
-
-void ScopedWindowPtr::DetachFromWindow() {
-  if (!window_)
-    return;
-
-  window_->RemoveObserver(this);
-  window_ = nullptr;
-}
-
-void ScopedWindowPtr::OnWindowDestroying(Window* window) {
-  DCHECK_EQ(window_, window);
-  DetachFromWindow();
-}
-
-}  // namespace ui