Add logging statements to places where the frame might be dropped in WebRTC pipeline.

BUG=b/31645554

Review-Url: https://codereview.webrtc.org/2361803003
Cr-Original-Commit-Position: refs/heads/master@{#14457}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 55d932b33115ae6e3a542b822b33605a03edc324
diff --git a/test/call_test.cc b/test/call_test.cc
index d6cbaa6..a2133fc 100644
--- a/test/call_test.cc
+++ b/test/call_test.cc
@@ -210,6 +210,7 @@
     video_config.rtp.local_ssrc = kReceiverLocalVideoSsrc;
     for (const RtpExtension& extension : video_send_config_.rtp.extensions)
       video_config.rtp.extensions.push_back(extension);
+    video_config.renderer = &fake_renderer_;
     for (size_t i = 0; i < video_send_config_.rtp.ssrcs.size(); ++i) {
       VideoReceiveStream::Decoder decoder =
           test::CreateMatchingDecoder(video_send_config_.encoder_settings);