Add sent framerates to histogram stats:

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

Index: webrtc/modules/video_coding/main/source/video_coding_impl.h
diff --git a/webrtc/modules/video_coding/main/source/video_coding_impl.h b/webrtc/modules/video_coding/main/source/video_coding_impl.h
index c8f82215813fe408aaf4a1b209a3ef4006bbaaa8..bd079d271f4b0a740b60417bce0295461e9bea06 100644
--- a/webrtc/modules/video_coding/main/source/video_coding_impl.h
+++ b/webrtc/modules/video_coding/main/source/video_coding_impl.h
@@ -113,6 +113,28 @@ class VideoSender {
   int32_t Process();
 
  private:
+
+  struct EncodedFrameStats {
+    EncodedFrameStats()
+        : sum_encode_time_ms(0),
+          max_encode_time_ms(-1),
+          encoded_frames(0) {}
+
+    void Update(int64_t encode_time_ms);
+    int64_t AvgEncodeTimeMs() {
+      return (encoded_frames > 0) ? (sum_encode_time_ms / encoded_frames) : -1;
+    }
+    int64_t MaxEncodeTimeMs() {
+      return (encoded_frames > 0) ? max_encode_time_ms : -1;
+    }
+
+   private:
+    int64_t sum_encode_time_ms;  // The total encode time of encoded frames.
+    int64_t max_encode_time_ms;  // The maximum encode time of encoded frames.
+    size_t encoded_frames;       // The number of encoded frames.
+  };
+
+  void UpdateHistograms();
   Clock* clock_;
 
   rtc::scoped_ptr<CriticalSectionWrapper> process_crit_sect_;
@@ -132,6 +154,8 @@ class VideoSender {
 
   VCMQMSettingsCallback* const qm_settings_callback_;
   VCMProtectionCallback* protection_callback_;
+
+  EncodedFrameStats stats_;
 };
 
 class VideoReceiver {