aura-mus: Implement stacking in DesktopWindowTreeHostMus.

ui/views/mus/mus_client.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 "ui/views/mus/mus_client.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/threading/thread.h"
 #include "components/discardable_memory/client/client_discardable_shared_memory_manager.h"
 #include "services/service_manager/public/cpp/connection.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/ui/public/cpp/gpu/gpu.h"
 #include "services/ui/public/cpp/property_type_converters.h"
 #include "services/ui/public/interfaces/constants.mojom.h"
 #include "services/ui/public/interfaces/event_matcher.mojom.h"
 #include "services/ui/public/interfaces/window_manager.mojom.h"
 #include "ui/aura/env.h"
 #include "ui/aura/mus/mus_context_factory.h"
 #include "ui/aura/mus/os_exchange_data_provider_mus.h"
 #include "ui/aura/mus/property_converter.h"
 #include "ui/aura/mus/window_tree_client.h"
 #include "ui/aura/mus/window_tree_host_mus.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/views/mus/aura_init.h"
 #include "ui/views/mus/clipboard_mus.h"
 #include "ui/views/mus/desktop_window_tree_host_mus.h"
+#include "ui/views/mus/mus_client_test_observer.h"
 #include "ui/views/mus/pointer_watcher_event_router.h"
 #include "ui/views/mus/screen_mus.h"
 #include "ui/views/views_delegate.h"
 #include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
 #include "ui/views/widget/widget_delegate.h"
 #include "ui/wm/core/capture_controller.h"
 #include "ui/wm/core/wm_state.h"
 
 // Widget::InitParams::Type must match that of ui::mojom::WindowType.
 #define WINDOW_TYPES_MATCH(NAME)                                      \
@@ skipping 16 matching lines @@
 
 namespace views {
 
 // static
 MusClient* MusClient::instance_ = nullptr;
 
 MusClient::MusClient(service_manager::Connector* connector,
                      const service_manager::Identity& identity,
                      scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
                      bool create_wm_state)
-    : identity_(identity) {
+    : identity_(identity), test_observer_(nullptr) {
   DCHECK(!instance_);
   DCHECK(aura::Env::GetInstance());
   instance_ = this;
 
   if (!io_task_runner) {
     io_thread_ = base::MakeUnique<base::Thread>("IOThread");
     base::Thread::Options thread_options(base::MessageLoop::TYPE_IO, 0);
     thread_options.priority = base::ThreadPriority::NORMAL;
     CHECK(io_thread_->StartWithOptions(thread_options));
     io_task_runner = io_thread_->task_runner();
@@ skipping 166 matching lines @@
     aura::WindowTreeHostMus* window_tree_host) {
   static_cast<DesktopWindowTreeHostMus*>(window_tree_host)
       ->ServerDestroyedWindow();
 }
 
 void MusClient::OnPointerEventObserved(const ui::PointerEvent& event,
                                        aura::Window* target) {
   pointer_watcher_event_router_->OnPointerEventObserved(event, target);
 }
 
+void MusClient::OnChangeCompleted(aura::ChangeType type, bool success) {
+  if (test_observer_)
+    test_observer_->OnChangeCompleted(type, success);
+}
+
 void MusClient::OnWindowManagerFrameValuesChanged() {
   for (auto& observer : observer_list_)
     observer.OnWindowManagerFrameValuesChanged();
 }
 
 aura::client::CaptureClient* MusClient::GetCaptureClient() {
   return wm::CaptureController::Get();
 }
 
 aura::PropertyConverter* MusClient::GetPropertyConverter() {
@@ skipping 12 matching lines @@
       return root->GetTopWindowContainingPoint(relative_point);
   }
   return nullptr;
 }
 
 std::unique_ptr<OSExchangeData::Provider> MusClient::BuildProvider() {
   return base::MakeUnique<aura::OSExchangeDataProviderMus>();
 }
 
 }  // namespace views