Revert of Replace the remaining scoped_ptr with unique_ptr in webrtc/modules/

webrtc/modules/desktop_capture/desktop_and_cursor_composer.cc

 /*
  *  Copyright (c) 2013 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.
  */
 
@@ skipping 120 matching lines @@
 DesktopAndCursorComposer::~DesktopAndCursorComposer() {}
 
 void DesktopAndCursorComposer::Start(DesktopCapturer::Callback* callback) {
   callback_ = callback;
   if (mouse_monitor_.get())
     mouse_monitor_->Init(this, MouseCursorMonitor::SHAPE_AND_POSITION);
   desktop_capturer_->Start(this);
 }
 
 void DesktopAndCursorComposer::SetSharedMemoryFactory(
-    std::unique_ptr<SharedMemoryFactory> shared_memory_factory) {
+    rtc::scoped_ptr<SharedMemoryFactory> shared_memory_factory) {
   desktop_capturer_->SetSharedMemoryFactory(std::move(shared_memory_factory));
 }
 
 void DesktopAndCursorComposer::Capture(const DesktopRegion& region) {
   if (mouse_monitor_.get())
     mouse_monitor_->Capture();
   desktop_capturer_->Capture(region);
 }
 
 void DesktopAndCursorComposer::SetExcludedWindow(WindowId window) {
@@ skipping 15 matching lines @@
 }
 
 void DesktopAndCursorComposer::OnMouseCursorPosition(
     MouseCursorMonitor::CursorState state,
     const DesktopVector& position) {
   cursor_state_ = state;
   cursor_position_ = position;
 }
 
 }  // namespace webrtc