MediaCodecVideoEncoder: Add QP stats to Encoded callback for VP9 and turn on quality scaling.

webrtc/media/engine/webrtcvideoengine2.cc

Index: webrtc/media/engine/webrtcvideoengine2.cc
diff --git a/webrtc/media/engine/webrtcvideoengine2.cc b/webrtc/media/engine/webrtcvideoengine2.cc
index 4980153490860bcf26117be084fd8800c682508f..4822a79c6d823d98445b25a0525e3a48d60776b8 100644
--- a/webrtc/media/engine/webrtcvideoengine2.cc
+++ b/webrtc/media/engine/webrtcvideoengine2.cc
@@ -421,6 +421,7 @@ WebRtcVideoChannel2::WebRtcVideoSendStream::ConfigureVideoEncoderSettings(
     // VP9 denoising is disabled by default.
     vp9_settings.denoisingOn = codec_default_denoising ? true : denoising;
     vp9_settings.frameDroppingOn = frame_dropping;
+    vp9_settings.automaticResizeOn = automatic_resize;
     return new rtc::RefCountedObject<
         webrtc::VideoEncoderConfig::Vp9EncoderSpecificSettings>(vp9_settings);
   }