beginnings of metro viewer process

ui/viewer/viewer_host_win.cc

+// Copyright (c) 2012 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/viewer/viewer_host_win.h"
+
+#include "ui/aura/client/stacking_client.h"
+#include "ui/aura/display_manager.h"
+#include "ui/aura/env.h"
+#include "ui/aura/focus_manager.h"
+#include "ui/aura/root_window.h"
+#include "ui/aura/shared/root_window_capture_client.h"
+#include "ui/aura/single_display_manager.h"
+
+class ViewerStackingClient : public aura::client::StackingClient {
+ public:
+  explicit ViewerStackingClient(aura::RootWindow* root_window)
+      : root_window_(root_window) {
+    aura::client::SetStackingClient(this);
+  }
+
+  virtual ~ViewerStackingClient() {
+    aura::client::SetStackingClient(NULL);
+  }
+
+  // Overridden from aura::client::StackingClient:
+  virtual aura::Window* GetDefaultParent(aura::Window* window,
+                                         const gfx::Rect& bounds) OVERRIDE {
+    return root_window_;
+  }
+
+ private:
+  aura::RootWindow* root_window_;
+
+  scoped_ptr<aura::shared::RootWindowCaptureClient> capture_client_;
+
+  DISALLOW_COPY_AND_ASSIGN(ViewerStackingClient);
+};
+
+ViewerHostWin::ViewerHostWin() {
+  aura::DisplayManager::set_use_fullscreen_host_window(true);
+  aura::Env::GetInstance()->SetDisplayManager(new aura::SingleDisplayManager);
+  root_window_.reset(aura::DisplayManager::CreateRootWindowForPrimaryDisplay());
+  root_window_capture_client_.reset(
+      new aura::shared::RootWindowCaptureClient(root_window_.get()));
+  focus_manager_.reset(new aura::FocusManager);
+  root_window_->set_focus_manager(focus_manager_.get());
+  stacking_client_.reset(new ViewerStackingClient(root_window_.get()));
+  root_window_->ShowRootWindow();
+}
+
+ViewerHostWin::~ViewerHostWin() {
+}