Add QP sum stats for received streams.

webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 79 matching lines @@
 
 class Vp8UnitTestDecodeCompleteCallback : public webrtc::DecodedImageCallback {
  public:
   explicit Vp8UnitTestDecodeCompleteCallback(rtc::Optional<VideoFrame>* frame)
       : decoded_frame_(frame), decode_complete(false) {}
   int32_t Decoded(VideoFrame& frame) override;
   int32_t Decoded(VideoFrame& frame, int64_t decode_time_ms) override {
     RTC_NOTREACHED();
     return -1;
   }
+  void Decoded(VideoFrame& frame,
+               rtc::Optional<int32_t> decode_time_ms,
+               rtc::Optional<uint8_t> qp) override {
+    RTC_NOTREACHED();
+  }
   bool DecodeComplete();
 
  private:
   rtc::Optional<VideoFrame>* decoded_frame_;
   bool decode_complete;
 };
 
 bool Vp8UnitTestDecodeCompleteCallback::DecodeComplete() {
   if (decode_complete) {
     decode_complete = false;
@@ skipping 171 matching lines @@
             decoder_->Decode(encoded_frame_, false, NULL));
   // Now setting a key frame.
   encoded_frame_._frameType = kVideoFrameKey;
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
             decoder_->Decode(encoded_frame_, false, NULL));
   ASSERT_TRUE(decoded_frame_);
   EXPECT_GT(I420PSNR(input_frame_.get(), &*decoded_frame_), 36);
 }
 
 }  // namespace webrtc