Propagate input capture time in ViEEncoder::OnFrame.

webrtc/video/vie_encoder.cc

Index: webrtc/video/vie_encoder.cc
diff --git a/webrtc/video/vie_encoder.cc b/webrtc/video/vie_encoder.cc
index a3b071ac00fb058cad52b3290d00d163550744df..76969b03718bc3d8f5731874171329b391e25abf 100644
--- a/webrtc/video/vie_encoder.cc
+++ b/webrtc/video/vie_encoder.cc
@@ -587,11 +587,7 @@ void ViEEncoder::OnFrame(const VideoFrame& video_frame) {
   VideoFrame incoming_frame = video_frame;
 
   // Local time in webrtc time base.
-  int64_t current_time_us = clock_->TimeInMicroseconds();
-  int64_t current_time_ms = current_time_us / rtc::kNumMicrosecsPerMillisec;
-  // TODO(nisse): This always overrides the incoming timestamp. Don't
-  // do that, trust the frame source.
-  incoming_frame.set_timestamp_us(current_time_us);
+  int64_t current_time_ms = clock_->TimeInMilliseconds();
 
   // Capture time may come from clock with an offset and drift from clock_.
   int64_t capture_ntp_time_ms;