Add sent framerates to histogram stats:

webrtc/modules/video_coding/main/source/media_optimization.h

 /*
  *  Copyright (c) 2012 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 121 matching lines @@
                                uint16_t width,
                                uint16_t height,
                                int num_temporal_layers,
                                int32_t mtu)
       EXCLUSIVE_LOCKS_REQUIRED(crit_sect_);
 
   uint32_t InputFrameRateInternal() EXCLUSIVE_LOCKS_REQUIRED(crit_sect_);
 
   uint32_t SentFrameRateInternal() EXCLUSIVE_LOCKS_REQUIRED(crit_sect_);
 
+  void UpdateHistograms();
+
   // Protect all members.
   rtc::scoped_ptr<CriticalSectionWrapper> crit_sect_;
 
   Clock* clock_ GUARDED_BY(crit_sect_);
   int32_t max_bit_rate_ GUARDED_BY(crit_sect_);
   VideoCodecType send_codec_type_ GUARDED_BY(crit_sect_);
   uint16_t codec_width_ GUARDED_BY(crit_sect_);
   uint16_t codec_height_ GUARDED_BY(crit_sect_);
   float user_frame_rate_ GUARDED_BY(crit_sect_);
   rtc::scoped_ptr<FrameDropper> frame_dropper_ GUARDED_BY(crit_sect_);
@@ skipping 14 matching lines @@
   uint32_t delta_frame_cnt_ GUARDED_BY(crit_sect_);
   rtc::scoped_ptr<VCMContentMetricsProcessing> content_ GUARDED_BY(crit_sect_);
   rtc::scoped_ptr<VCMQmResolution> qm_resolution_ GUARDED_BY(crit_sect_);
   int64_t last_qm_update_time_ GUARDED_BY(crit_sect_);
   int64_t last_change_time_ GUARDED_BY(crit_sect_);  // Content/user triggered.
   int num_layers_ GUARDED_BY(crit_sect_);
   bool suspension_enabled_ GUARDED_BY(crit_sect_);
   bool video_suspended_ GUARDED_BY(crit_sect_);
   int suspension_threshold_bps_ GUARDED_BY(crit_sect_);
   int suspension_window_bps_ GUARDED_BY(crit_sect_);
+  size_t sent_frames_ GUARDED_BY(crit_sect_);
+  int64_t first_sent_frame_time_ms_ GUARDED_BY(crit_sect_);
 };
 }  // namespace media_optimization
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_MAIN_SOURCE_MEDIA_OPTIMIZATION_H_