Move usage of QualityScaler to ViEEncoder.

webrtc/media/engine/videoencodersoftwarefallbackwrapper.cc

Index: webrtc/media/engine/videoencodersoftwarefallbackwrapper.cc
diff --git a/webrtc/media/engine/videoencodersoftwarefallbackwrapper.cc b/webrtc/media/engine/videoencodersoftwarefallbackwrapper.cc
index cc37a91736e9e1df696e32ecbba445ff0bd43c4b..6f5b8885196a587dc6919891e3562a0f7a37edd9 100644
--- a/webrtc/media/engine/videoencodersoftwarefallbackwrapper.cc
+++ b/webrtc/media/engine/videoencodersoftwarefallbackwrapper.cc
@@ -157,16 +157,15 @@ int32_t VideoEncoderSoftwareFallbackWrapper::SetRateAllocation(
   return ret;
 }
 
-void VideoEncoderSoftwareFallbackWrapper::OnDroppedFrame() {
-  if (fallback_encoder_)
-    return fallback_encoder_->OnDroppedFrame();
-  return encoder_->OnDroppedFrame();
-}
-
 bool VideoEncoderSoftwareFallbackWrapper::SupportsNativeHandle() const {
   if (fallback_encoder_)
     return fallback_encoder_->SupportsNativeHandle();
   return encoder_->SupportsNativeHandle();
 }
 
+VideoEncoder::ScalingSettings
+VideoEncoderSoftwareFallbackWrapper::GetScalingSettings() const {
+  return encoder_->GetScalingSettings();
+}
+
 }  // namespace webrtc