Move usage of QualityScaler to ViEEncoder.

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

Index: webrtc/modules/video_coding/codecs/vp8/simulcast_encoder_adapter.cc
diff --git a/webrtc/modules/video_coding/codecs/vp8/simulcast_encoder_adapter.cc b/webrtc/modules/video_coding/codecs/vp8/simulcast_encoder_adapter.cc
index 32472750f5f0fc21df8512431ece44af806377d7..9a050e53529326ea8b392e13c8093b1fa8234f2e 100644
--- a/webrtc/modules/video_coding/codecs/vp8/simulcast_encoder_adapter.cc
+++ b/webrtc/modules/video_coding/codecs/vp8/simulcast_encoder_adapter.cc
@@ -465,6 +465,16 @@ bool SimulcastEncoderAdapter::SupportsNativeHandle() const {
   return true;
 }
 
+VideoEncoder::ScalingSettings SimulcastEncoderAdapter::GetScalingSettings()
+    const {
+  // Turn off quality scaling for simulcast.
+  if (NumberOfStreams(codec_) == 1) {
+    return streaminfos_[0].encoder->GetScalingSettings();
+  } else {

[stefan-webrtc, 2016/11/17 16:12:57]

I'd rewrite this:

if (NumberOfStreams(codec_) != 1)
  return VideoEncoder::ScalingSettings(false);
return streaminfos_[0].encoder->GetScalingSettings();

[kthelgason, 2016/11/21 13:06:52]

Done.

+    return VideoEncoder::ScalingSettings(false);
+  }
+}
+
 const char* SimulcastEncoderAdapter::ImplementationName() const {
   return implementation_name_.c_str();
 }