vp9: Enable vp9 denoiser by default in standalone webrtc.

webrtc/modules/video_coding/codec_database.cc

Index: webrtc/modules/video_coding/codec_database.cc
diff --git a/webrtc/modules/video_coding/codec_database.cc b/webrtc/modules/video_coding/codec_database.cc
index 4d5e20215caa090aebff54ef3b387ff39ee56dd6..51152fd052a5228dbe8f019968bd7b3ca3836f59 100644
--- a/webrtc/modules/video_coding/codec_database.cc
+++ b/webrtc/modules/video_coding/codec_database.cc
@@ -46,7 +46,7 @@ VideoCodecVP9 VideoEncoder::GetDefaultVp9Settings() {
 
   vp9_settings.resilience = 1;
   vp9_settings.numberOfTemporalLayers = 1;
-  vp9_settings.denoisingOn = false;
+  vp9_settings.denoisingOn = true;
   vp9_settings.frameDroppingOn = true;
   vp9_settings.keyFrameInterval = 3000;
   vp9_settings.adaptiveQpMode = true;