Replace scoped_ptr with unique_ptr in webrtc/modules/desktop_capture/

webrtc/modules/desktop_capture/desktop_and_cursor_composer.cc

Index: webrtc/modules/desktop_capture/desktop_and_cursor_composer.cc
diff --git a/webrtc/modules/desktop_capture/desktop_and_cursor_composer.cc b/webrtc/modules/desktop_capture/desktop_and_cursor_composer.cc
index 5da8beebb6e9936b086918355e6ee51345817814..55afedeabf1094b6d5eece10e84914079d8131ca 100644
--- a/webrtc/modules/desktop_capture/desktop_and_cursor_composer.cc
+++ b/webrtc/modules/desktop_capture/desktop_and_cursor_composer.cc
@@ -62,10 +62,10 @@ class DesktopFrameWithCursor : public DesktopFrame {
   virtual ~DesktopFrameWithCursor();
 
  private:
-  rtc::scoped_ptr<DesktopFrame> original_frame_;
+  std::unique_ptr<DesktopFrame> original_frame_;
 
   DesktopVector restore_position_;
-  rtc::scoped_ptr<DesktopFrame> restore_frame_;
+  std::unique_ptr<DesktopFrame> restore_frame_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(DesktopFrameWithCursor);
 };