platform-window: Add a PlatformWindowFactory for creating windows.

ui/platform_window/platform_window.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_H_
-#define UI_PLATFORM_WINDOW_PLATFORM_WINDOW_H_
-
-#include "base/memory/scoped_ptr.h"
-
-namespace gfx {
-class Rect;
-}
-
-namespace ui {
-
-class PlatformWindowDelegate;
-
-// Platform window.
-//
-// Each instance of PlatformWindow represents a single window in the
-// underlying platform windowing system (i.e. X11/Win/OSX).
-class PlatformWindow {
- public:
-  virtual ~PlatformWindow() {}
-
-  virtual void Show() = 0;
-  virtual void Hide() = 0;
-  virtual void Close() = 0;
-
-  // Sets and gets the bounds of the platform-window. Note that the bounds is in
-  // physical pixel coordinates.
-  virtual void SetBounds(const gfx::Rect& bounds) = 0;
-  virtual gfx::Rect GetBounds() = 0;
-
-  virtual void SetCapture() = 0;
-  virtual void ReleaseCapture() = 0;
-
-  virtual void ToggleFullscreen() = 0;
-  virtual void Maximize() = 0;
-  virtual void Minimize() = 0;
-  virtual void Restore() = 0;
-};
-
-}  // namespace ui
-
-#endif  // UI_PLATFORM_WINDOW_PLATFORM_WINDOW_H_