Add VideoSendStream::Stats::prefered_media_bitrate_bps

webrtc/video/send_statistics_proxy.cc

Index: webrtc/video/send_statistics_proxy.cc
diff --git a/webrtc/video/send_statistics_proxy.cc b/webrtc/video/send_statistics_proxy.cc
index d47ccbdfec52b64da17cd2947db8508dd1316e35..039e039354cff415c9484c8742f6babe78b0e565 100644
--- a/webrtc/video/send_statistics_proxy.cc
+++ b/webrtc/video/send_statistics_proxy.cc
@@ -339,14 +339,17 @@ void SendStatisticsProxy::UmaSamplesContainer::UpdateHistograms(
   }
 }
 
-void SendStatisticsProxy::SetContentType(
-    VideoEncoderConfig::ContentType content_type) {
+void SendStatisticsProxy::OnEncoderReconfigured(
+    const VideoEncoderConfig& config,
+    uint32_t preferred_bitrate_bps) {
   rtc::CritScope lock(&crit_);
-  if (content_type_ != content_type) {
+  stats_.preferred_media_bitrate_bps = preferred_bitrate_bps;
+
+  if (content_type_ != config.content_type) {
     uma_container_->UpdateHistograms(rtp_config_, stats_);
-    uma_container_.reset(
-        new UmaSamplesContainer(GetUmaPrefix(content_type), stats_, clock_));
-    content_type_ = content_type;
+    uma_container_.reset(new UmaSamplesContainer(
+        GetUmaPrefix(config.content_type), stats_, clock_));
+    content_type_ = config.content_type;
   }
 }