Reverse |rtx_payload_types| map, and rename.

webrtc/video/video_quality_test.cc

Index: webrtc/video/video_quality_test.cc
diff --git a/webrtc/video/video_quality_test.cc b/webrtc/video/video_quality_test.cc
index 6ad64bc33f601de042309c8c869626d2f700a716..2c3adbf37ddc65b5aef69eddb36e759bb54744ab 100644
--- a/webrtc/video/video_quality_test.cc
+++ b/webrtc/video/video_quality_test.cc
@@ -1480,8 +1480,8 @@ void VideoQualityTest::SetupVideo(Transport* send_transport,
   for (size_t i = 0; i < num_video_streams; ++i) {
     video_receive_configs_[i].rtp.nack.rtp_history_ms = kNackRtpHistoryMs;
     video_receive_configs_[i].rtp.rtx_ssrc = kSendRtxSsrcs[i];
-    video_receive_configs_[i].rtp.rtx_payload_types[payload_type] =
-        kSendRtxPayloadType;
+    video_receive_configs_[i].rtp.media_pt_by_rtx_pt[kSendRtxPayloadType] =
+        payload_type;
     video_receive_configs_[i].rtp.transport_cc = params_.call.send_side_bwe;
     video_receive_configs_[i].rtp.remb = !params_.call.send_side_bwe;
     // Enable RTT calculation so NTP time estimator will work.
@@ -1623,8 +1623,8 @@ void VideoQualityTest::SetupThumbnails(Transport* send_transport,
 
     thumbnail_receive_config.rtp.nack.rtp_history_ms = kNackRtpHistoryMs;
     thumbnail_receive_config.rtp.rtx_ssrc = kThumbnailRtxSsrcStart + i;
-    thumbnail_receive_config.rtp.rtx_payload_types[kPayloadTypeVP8] =
-        kSendRtxPayloadType;
+    thumbnail_receive_config.rtp.media_pt_by_rtx_pt[kSendRtxPayloadType] =
+        kPayloadTypeVP8;
     thumbnail_receive_config.rtp.transport_cc = params_.call.send_side_bwe;
     thumbnail_receive_config.rtp.remb = !params_.call.send_side_bwe;