Replace scoped_ptr with unique_ptr in webrtc/base/

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/scoped_ptr.h"
 #include "webrtc/base/windowpicker.h"
 
 // Avoid include <X11/Xlib.h>.
 struct _XDisplay;
 typedef unsigned long Window;
 
 namespace rtc {
 
 class XWindowEnumerator;
 
@@ skipping 11 matching lines @@
   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:
-  scoped_ptr<XWindowEnumerator> enumerator_;
+  std::unique_ptr<XWindowEnumerator> enumerator_;
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_LINUXWINDOWPICKER_H_