Let ViEEncoder express resolution requests as Sinkwants

webrtc/media/base/mediachannel.h

Index: webrtc/media/base/mediachannel.h
diff --git a/webrtc/media/base/mediachannel.h b/webrtc/media/base/mediachannel.h
index 863b4dcf9e1715c45317d9a3c2bdd1ecf62de983..b21919c94a536392cef3089c124f7fa2f2c5e224 100644
--- a/webrtc/media/base/mediachannel.h
+++ b/webrtc/media/base/mediachannel.h
@@ -105,9 +105,7 @@ struct MediaConfig {
   // Video-specific config.
   struct Video {
     // Enable WebRTC CPU Overuse Detection. This flag comes from the
-    // PeerConnection constraint 'googCpuOveruseDetection' and is
-    // checked in WebRtcVideoChannel2::OnLoadUpdate, where it's passed
-    // to VideoCapturer::video_adapter()->OnCpuResolutionRequest.
+    // PeerConnection constraint 'googCpuOveruseDetection'.
     bool enable_cpu_overuse_detection = true;
 
     // Enable WebRTC suspension of video. No video frames will be sent