Create a new views_aura_desktop.

aura/desktop.cc

 // Copyright (c) 2011 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 "aura/desktop.h"
 
+#include "aura/desktop_host.h"
 #include "aura/window.h"
 #include "base/logging.h"
+#include "base/message_loop.h"
 #include "ui/gfx/compositor/compositor.h"
 
 namespace aura {
 
-Desktop::Desktop(gfx::AcceleratedWidget widget, const gfx::Size& size)
-    : compositor_(ui::Compositor::Create(widget, size)) {
+// static
+Desktop* Desktop::instance_ = NULL;
+
+Desktop::Desktop()
+    : host_(aura::DesktopHost::Create(gfx::Rect(200, 200, 1024, 768))) {
+  compositor_ = ui::Compositor::Create(host_->GetAcceleratedWidget(),
+                                       host_->GetSize());
+  host_->SetDesktop(this);
   DCHECK(compositor_.get());
-  window_.reset(new Window(this));
+  window_.reset(new Window(NULL));
 }
 
 Desktop::~Desktop() {
 }
 
+void Desktop::Run() {
+  host_->Show();
+  MessageLoop main_message_loop(MessageLoop::TYPE_UI);
+  MessageLoopForUI::current()->Run(host_);
+}
+
 void Desktop::Draw() {
   // Second pass renders the layers.
   compositor_->NotifyStart();
   window_->DrawTree();
   compositor_->NotifyEnd();
 }
 
 bool Desktop::OnMouseEvent(const MouseEvent& event) {
   return window_->OnMouseEvent(event);
 }
 
+// static
+Desktop* Desktop::GetInstance() {
+  if (!instance_) {
+    instance_ = new Desktop;
+    instance_->window_->Init();
+  }
+  return instance_;
+}
+
 }  // namespace aura