Switch temporal layer impl used for screenshare upper simulcast stream.

webrtc/modules/video_coding/codecs/vp8/screenshare_layers.cc

Index: webrtc/modules/video_coding/codecs/vp8/screenshare_layers.cc
diff --git a/webrtc/modules/video_coding/codecs/vp8/screenshare_layers.cc b/webrtc/modules/video_coding/codecs/vp8/screenshare_layers.cc
index aca4514279f8f3a6c08ad4b3ebc2bd94018d0a53..05b81b84403976b96a13ee05df5cfa4a6d947e6f 100644
--- a/webrtc/modules/video_coding/codecs/vp8/screenshare_layers.cc
+++ b/webrtc/modules/video_coding/codecs/vp8/screenshare_layers.cc
@@ -62,7 +62,7 @@ webrtc::TemporalLayers* ScreenshareTemporalLayersFactory::Create(
     tl = new webrtc::ScreenshareLayers(num_temporal_layers, rand(),
                                        webrtc::Clock::GetRealTimeClock());
   } else {
-    RealTimeTemporalLayersFactory rt_tl_factory;
+    TemporalLayersFactory rt_tl_factory;
     tl = rt_tl_factory.Create(simulcast_id, num_temporal_layers, rand());
   }
   if (listener_)