platform-window: Add a PlatformWindowFactory for creating windows.

ui/platform_window/platform_window_delegate.h

-// Copyright 2014 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.
-
-#ifndef UI_PLATFORM_WINDOW_PLATFORM_WINDOW_DELEGATE_H_
-#define UI_PLATFORM_WINDOW_PLATFORM_WINDOW_DELEGATE_H_
-
-#include "ui/gfx/native_widget_types.h"
-
-namespace gfx {
-class Rect;
-}
-
-namespace ui {
-
-class Event;
-
-enum PlatformWindowState {
-  PLATFORM_WINDOW_STATE_UNKNOWN,
-  PLATFORM_WINDOW_STATE_MAXIMIZED,
-  PLATFORM_WINDOW_STATE_MINIMIZED,
-  PLATFORM_WINDOW_STATE_NORMAL,
-  PLATFORM_WINDOW_STATE_FULLSCREEN,
-};
-
-class PlatformWindowDelegate {
- public:
-  virtual ~PlatformWindowDelegate() {}
-
-  // Note that |new_bounds| is in physical screen coordinates.
-  virtual void OnBoundsChanged(const gfx::Rect& new_bounds) = 0;
-
-  // Note that |damaged_region| is in the platform-window's coordinates, in
-  // physical pixels.
-  virtual void OnDamageRect(const gfx::Rect& damaged_region) = 0;
-
-  virtual void DispatchEvent(Event* event) = 0;
-
-  virtual void OnCloseRequest() = 0;
-  virtual void OnClosed() = 0;
-
-  virtual void OnWindowStateChanged(PlatformWindowState new_state) = 0;
-
-  virtual void OnLostCapture() = 0;
-
-  virtual void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget) = 0;
-
-  virtual void OnActivationChanged(bool active) = 0;
-};
-
-}  // namespace ui
-
-#endif  // UI_PLATFORM_WINDOW_PLATFORM_WINDOW_DELEGATE_H_