Delete WindowPicker class and subclasses.

webrtc/base/x11windowpicker.h

-/*
- *  Copyright 2010 The WebRTC Project Authors. All rights reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef WEBRTC_BASE_LINUXWINDOWPICKER_H_
-#define WEBRTC_BASE_LINUXWINDOWPICKER_H_
-
-#include <memory>
-
-#include "webrtc/base/basictypes.h"
-#include "webrtc/base/windowpicker.h"
-
-// Avoid include <X11/Xlib.h>.
-struct _XDisplay;
-typedef unsigned long Window;
-
-namespace rtc {
-
-class XWindowEnumerator;
-
-class X11WindowPicker : public WindowPicker {
- public:
-  X11WindowPicker();
-  ~X11WindowPicker() override;
-
-  static bool IsDesktopElement(_XDisplay* display, Window window);
-
-  bool Init() override;
-  bool IsVisible(const WindowId& id) override;
-  bool MoveToFront(const WindowId& id) override;
-  bool GetWindowList(WindowDescriptionList* descriptions) override;
-  bool GetDesktopList(DesktopDescriptionList* descriptions) override;
-  bool GetDesktopDimensions(const DesktopId& id,
-                            int* width,
-                            int* height) override;
-  uint8_t* GetWindowIcon(const WindowId& id, int* width, int* height);
-  uint8_t* GetWindowThumbnail(const WindowId& id, int width, int height);
-  int GetNumDesktops();
-  uint8_t* GetDesktopThumbnail(const DesktopId& id, int width, int height);
-
- private:
-  std::unique_ptr<XWindowEnumerator> enumerator_;
-};
-
-}  // namespace rtc
-
-#endif  // WEBRTC_BASE_LINUXWINDOWPICKER_H_