Update sink wants with ranges for both pixel count and frame rate.

webrtc/video/vie_encoder.h

Index: webrtc/video/vie_encoder.h
diff --git a/webrtc/video/vie_encoder.h b/webrtc/video/vie_encoder.h
index c0b80baadd6e948c918b8f75fb704b5b77b4e2b4..711ebb4c730909af8dafe286f2566f79469027e7 100644
--- a/webrtc/video/vie_encoder.h
+++ b/webrtc/video/vie_encoder.h
@@ -225,6 +225,8 @@ class ViEEncoder : public rtc::VideoSinkInterface<VideoFrame>,
   struct AdaptationRequest {
     // The pixel count produced by the source at the time of the adaptation.
     int input_pixel_count_;
+    // Framerate received from the source at the time of the adaptation.
+    int framerate_fps_;
     // Indicates if request was to adapt up or down.
     enum class Mode { kAdaptUp, kAdaptDown } mode_;
   };