WebRTC's scoped_ptr and scoped_ptr.h are going away, so stop using them

remoting/protocol/fake_desktop_capturer.h

Index: remoting/protocol/fake_desktop_capturer.h
diff --git a/remoting/protocol/fake_desktop_capturer.h b/remoting/protocol/fake_desktop_capturer.h
index 9b54fd664bc7055c95bf6c7b41b8df07dce583ba..84d3a019b0fc1f0a39b0240e4e416c9ff422acbb 100644
--- a/remoting/protocol/fake_desktop_capturer.h
+++ b/remoting/protocol/fake_desktop_capturer.h
@@ -38,7 +38,7 @@ class FakeDesktopCapturer : public webrtc::DesktopCapturer {
 
   // webrtc::DesktopCapturer interface.
   void Start(Callback* callback) override;
-  void SetSharedMemoryFactory(rtc::scoped_ptr<webrtc::SharedMemoryFactory>
+  void SetSharedMemoryFactory(std::unique_ptr<webrtc::SharedMemoryFactory>
                                   shared_memory_factory) override;
   void Capture(const webrtc::DesktopRegion& rect) override;