Remove windows/mac/ios specific code from //ui

ui/gfx/win/window_impl.h

-// 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.
-
-#ifndef UI_GFX_WIN_WINDOW_IMPL_H_
-#define UI_GFX_WIN_WINDOW_IMPL_H_
-
-#include <string>
-
-#include "base/logging.h"
-#include "ui/gfx/gfx_export.h"
-#include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/rect.h"
-#include "ui/gfx/win/msg_util.h"
-
-namespace gfx {
-
-// An interface implemented by classes that use message maps.
-// ProcessWindowMessage is implemented by the BEGIN_MESSAGE_MAP_EX macro.
-class MessageMapInterface {
- public:
-  // Processes one message from the window's message queue.
-  virtual BOOL ProcessWindowMessage(HWND window,
-                                    UINT message,
-                                    WPARAM w_param,
-                                    LPARAM l_param,
-                                    LRESULT& result,
-                                    DWORD msg_map_id = 0) = 0;
-};
-
-///////////////////////////////////////////////////////////////////////////////
-//
-// WindowImpl
-//  A convenience class that encapsulates the details of creating and
-//  destroying a HWND.  This class also hosts the windows procedure used by all
-//  Windows.
-//
-///////////////////////////////////////////////////////////////////////////////
-class GFX_EXPORT WindowImpl : public MessageMapInterface {
- public:
-  WindowImpl();
-  virtual ~WindowImpl();
-
-  // Causes all generated windows classes to be unregistered at exit.
-  // This can cause result in errors for tests that don't destroy all instances
-  // of windows, but is necessary if the tests unload the classes WndProc.
-  static void UnregisterClassesAtExit();
-
-  // Initializes the Window with a parent and an initial desired size.
-  void Init(HWND parent, const gfx::Rect& bounds);
-
-  // Returns the default window icon to use for windows of this type.
-  virtual HICON GetDefaultWindowIcon() const;
-
-  // Returns the HWND associated with this Window.
-  HWND hwnd() const { return hwnd_; }
-
-  // Sets the window styles. This is ONLY used when the window is created.
-  // In other words, if you invoke this after invoking Init, nothing happens.
-  void set_window_style(DWORD style) { window_style_ = style; }
-  DWORD window_style() const { return window_style_; }
-
-  // Sets the extended window styles. See comment about |set_window_style|.
-  void set_window_ex_style(DWORD style) { window_ex_style_ = style; }
-  DWORD window_ex_style() const { return window_ex_style_; }
-
-  // Sets the class style to use. The default is CS_DBLCLKS.
-  void set_initial_class_style(UINT class_style) {
-    // We dynamically generate the class name, so don't register it globally!
-    DCHECK_EQ((class_style & CS_GLOBALCLASS), 0u);
-    class_style_ = class_style;
-  }
-  UINT initial_class_style() const { return class_style_; }
-
- protected:
-  // Handles the WndProc callback for this object.
-  virtual LRESULT OnWndProc(UINT message, WPARAM w_param, LPARAM l_param);
-
-  // Subclasses must call this method from their destructors to ensure that
-  // this object is properly disassociated from the HWND during destruction,
-  // otherwise it's possible this object may still exist while a subclass is
-  // destroyed.
-  void ClearUserData();
-
- private:
-  friend class ClassRegistrar;
-
-  // The window procedure used by all Windows.
-  static LRESULT CALLBACK WndProc(HWND window,
-                                  UINT message,
-                                  WPARAM w_param,
-                                  LPARAM l_param);
-
-  // Gets the window class atom to use when creating the corresponding HWND.
-  // If necessary, this registers the window class.
-  ATOM GetWindowClassAtom();
-
-  // All classes registered by WindowImpl start with this name.
-  static const wchar_t* const kBaseClassName;
-
-  // Window Styles used when creating the window.
-  DWORD window_style_;
-
-  // Window Extended Styles used when creating the window.
-  DWORD window_ex_style_;
-
-  // Style of the class to use.
-  UINT class_style_;
-
-  // Our hwnd.
-  HWND hwnd_;
-
-  // For debugging.
-  // TODO(sky): nuke this when get crash data.
-  bool got_create_;
-  bool got_valid_hwnd_;
-  bool* destroyed_;
-
-  DISALLOW_COPY_AND_ASSIGN(WindowImpl);
-};
-
-}  // namespace gfx
-
-#endif  // UI_GFX_WIN_WINDOW_IMPL_H_