Add QP for libvpx VP8 decoder.

webrtc/modules/video_coding/codecs/vp8/simulcast_unittest.h

Index: webrtc/modules/video_coding/codecs/vp8/simulcast_unittest.h
diff --git a/webrtc/modules/video_coding/codecs/vp8/simulcast_unittest.h b/webrtc/modules/video_coding/codecs/vp8/simulcast_unittest.h
index b7e3e7d56932d7e9d7a9ce57361ecfb60d35d3da..fb59646dcb1af0b763a19bc14d5bb5f61123c754 100644
--- a/webrtc/modules/video_coding/codecs/vp8/simulcast_unittest.h
+++ b/webrtc/modules/video_coding/codecs/vp8/simulcast_unittest.h
@@ -148,7 +148,7 @@ class Vp8TestDecodedImageCallback : public DecodedImageCallback {
   void Decoded(VideoFrame& decoded_image,
                rtc::Optional<int32_t> decode_time_ms,
                rtc::Optional<uint8_t> qp) override {
-    RTC_NOTREACHED();
+    Decoded(decoded_image);
   }
   int DecodedFrames() { return decoded_frames_; }