Replace the remaining scoped_ptr with unique_ptr in webrtc/modules/

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 52b111c3506882676f5dee5f596c993ad9b83cfb..4c6e27e561eaa19794df980f63bf9028924b697f 100644
--- a/webrtc/modules/desktop_capture/desktop_and_cursor_composer.cc
+++ b/webrtc/modules/desktop_capture/desktop_and_cursor_composer.cc
@@ -138,7 +138,7 @@ void DesktopAndCursorComposer::Start(DesktopCapturer::Callback* callback) {
 }
 
 void DesktopAndCursorComposer::SetSharedMemoryFactory(
-    rtc::scoped_ptr<SharedMemoryFactory> shared_memory_factory) {
+    std::unique_ptr<SharedMemoryFactory> shared_memory_factory) {
   desktop_capturer_->SetSharedMemoryFactory(std::move(shared_memory_factory));
 }