Add encode and decode time to histograms stats:

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 fe60f1eaa5f9937441a9fbfc289d868109a0b18c..551b4b562a43904f6cfe1105d65455b2610126b9 100644
--- a/webrtc/video/send_statistics_proxy.cc
+++ b/webrtc/video/send_statistics_proxy.cc
@@ -46,7 +46,7 @@ void SendStatisticsProxy::UpdateHistograms() {
   if (sent_fps > 0)
     RTC_HISTOGRAM_COUNTS_100("WebRTC.Video.SentFramesPerSecond", sent_fps);
 
-  const int kMinRequiredSamples = 100;
+  const int kMinRequiredSamples = 200;
   int in_width = input_width_counter_.Avg(kMinRequiredSamples);
   int in_height = input_height_counter_.Avg(kMinRequiredSamples);
   if (in_width != -1) {
@@ -59,6 +59,9 @@ void SendStatisticsProxy::UpdateHistograms() {
     RTC_HISTOGRAM_COUNTS_10000("WebRTC.Video.SentWidthInPixels", sent_width);
     RTC_HISTOGRAM_COUNTS_10000("WebRTC.Video.SentHeightInPixels", sent_height);
   }
+  int encode_ms = encode_time_counter_.Avg(kMinRequiredSamples);
+  if (encode_ms != -1)
+    RTC_HISTOGRAM_COUNTS_1000("WebRTC.Video.EncodeTimeInMs", encode_ms);
 }
 
 void SendStatisticsProxy::OutgoingRate(const int video_channel,
@@ -72,6 +75,7 @@ void SendStatisticsProxy::OutgoingRate(const int video_channel,
 void SendStatisticsProxy::CpuOveruseMetricsUpdated(
     const CpuOveruseMetrics& metrics) {
   rtc::CritScope lock(&crit_);
+  // TODO(asapersson): Change to use OnEncodedFrame() for avg_encode_time_ms.
   stats_.avg_encode_time_ms = metrics.avg_encode_time_ms;
   stats_.encode_usage_percent = metrics.encode_usage_percent;
 }
@@ -186,6 +190,11 @@ void SendStatisticsProxy::OnIncomingFrame(int width, int height) {
   input_height_counter_.Add(height);
 }
 
+void SendStatisticsProxy::OnEncodedFrame(int encode_time_ms) {
+  rtc::CritScope lock(&crit_);
+  encode_time_counter_.Add(encode_time_ms);
+}
+
 void SendStatisticsProxy::RtcpPacketTypesCounterUpdated(
     uint32_t ssrc,
     const RtcpPacketTypeCounter& packet_counter) {