Measure encoding time on encode callbacks.

webrtc/video/send_statistics_proxy.h

Index: webrtc/video/send_statistics_proxy.h
diff --git a/webrtc/video/send_statistics_proxy.h b/webrtc/video/send_statistics_proxy.h
index f4c3f5ae00d3936b8710ed99c3578187f804addc..7932e6170def6ab057977cc9eb16e539df2b763c 100644
--- a/webrtc/video/send_statistics_proxy.h
+++ b/webrtc/video/send_statistics_proxy.h
@@ -52,9 +52,6 @@ class SendStatisticsProxy : public CpuOveruseMetricsObserver,
   // Used to update incoming frame rate.
   void OnIncomingFrame(int width, int height);
 
-  // Used to update encode time of frames.
-  void OnEncodedFrame(int encode_time_ms);
-
   // From VideoEncoderRateObserver.
   void OnSetRates(uint32_t bitrate_bps, int framerate) override;
 
@@ -67,9 +64,11 @@ class SendStatisticsProxy : public CpuOveruseMetricsObserver,
   // how stats are collected.
   void SetContentType(VideoEncoderConfig::ContentType content_type);
 
- protected:
   // From CpuOveruseMetricsObserver.
-  void CpuOveruseMetricsUpdated(const CpuOveruseMetrics& metrics) override;
+  void OnEncodedFrameTimeMeasured(int encode_time_ms,
+                                  const CpuOveruseMetrics& metrics) override;
+
+ protected:
   // From RtcpStatisticsCallback.
   void StatisticsUpdated(const RtcpStatistics& statistics,
                          uint32_t ssrc) override;