Add plumbing of RtpPacketInfos to each VideoFrame as input for SourceTracker.

This change adds the plumbing of RtpPacketInfo from RtpVideoStreamReceiver::OnRtpPacket() to VideoReceiveStream::OnFrame() for video. It is a step towards replacing the non-spec compliant ContributingSources that updates itself at packet-receive time, with the spec-compliant SourceTracker that will update itself at frame-delivery-to-track time.

Bug: webrtc:10668
Change-Id: Ib97d430530c5a8487d3b129936c7c51e118889bd
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/139891
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Commit-Queue: Chen Xing <chxg@google.com>
Cr-Commit-Position: refs/heads/master@{#28332}
diff --git a/video/rtp_video_stream_receiver_unittest.cc b/video/rtp_video_stream_receiver_unittest.cc
index 24a49f0..d30a698 100644
--- a/video/rtp_video_stream_receiver_unittest.cc
+++ b/video/rtp_video_stream_receiver_unittest.cc
@@ -36,6 +36,7 @@
 
 using ::testing::_;
 using ::testing::Invoke;
+using ::testing::SizeIs;
 using ::testing::Values;
 
 namespace webrtc {
@@ -721,6 +722,7 @@
         EXPECT_EQ(frame->references[0], frame->id.picture_id - 90);
         EXPECT_EQ(frame->references[1], frame->id.picture_id - 80);
         EXPECT_EQ(frame->id.spatial_layer, kSpatialIndex);
+        EXPECT_THAT(frame->PacketInfos(), SizeIs(1));
       }));
 
   rtp_video_stream_receiver_->OnRtpPacket(rtp_packet);
@@ -785,6 +787,7 @@
         EXPECT_EQ(frame->id.spatial_layer, kSpatialIndex);
         EXPECT_EQ(frame->EncodedImage()._encodedWidth, 480u);
         EXPECT_EQ(frame->EncodedImage()._encodedHeight, 360u);
+        EXPECT_THAT(frame->PacketInfos(), SizeIs(2));
       }));
 
   rtp_video_stream_receiver_->OnRtpPacket(second_packet);