Move logic for calculating needed bitrate overhead used by NACK and FEC to VideoSender.

webrtc/video/send_statistics_proxy.cc

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 495 matching lines @@
   }
   last_sent_frame_timestamp_ = encoded_image._timeStamp;
   uma_container_->max_sent_width_per_timestamp_ =
       std::max(uma_container_->max_sent_width_per_timestamp_,
                static_cast<int>(encoded_image._encodedWidth));
   uma_container_->max_sent_height_per_timestamp_ =
       std::max(uma_container_->max_sent_height_per_timestamp_,
                static_cast<int>(encoded_image._encodedHeight));
 }
 
+int SendStatisticsProxy::GetSendFrameRate() const {
+  rtc::CritScope lock(&crit_);
+  return stats_.encode_frame_rate;
+}
+
 void SendStatisticsProxy::OnIncomingFrame(int width, int height) {
   rtc::CritScope lock(&crit_);
   uma_container_->input_frame_rate_tracker_.AddSamples(1);
   uma_container_->input_width_counter_.Add(width);
   uma_container_->input_height_counter_.Add(height);
 }
 
 void SendStatisticsProxy::RtcpPacketTypesCounterUpdated(
     uint32_t ssrc,
     const RtcpPacketTypeCounter& packet_counter) {
@@ skipping 96 matching lines @@
   return Fraction(min_required_samples, 1000.0f);
 }
 
 int SendStatisticsProxy::BoolSampleCounter::Fraction(
     int min_required_samples, float multiplier) const {
   if (num_samples < min_required_samples || num_samples == 0)
     return -1;
   return static_cast<int>((sum * multiplier / num_samples) + 0.5f);
 }
 }  // namespace webrtc