Uncomment thread-checkers in ChannelProxy

webrtc/voice_engine/channel_proxy.cc

Index: webrtc/voice_engine/channel_proxy.cc
diff --git a/webrtc/voice_engine/channel_proxy.cc b/webrtc/voice_engine/channel_proxy.cc
index 027659d2f0ec09e7534c84c484b840e5f42ed95c..cdd4b6624ff53612ffacfceeebecf37d5dd98c1c 100644
--- a/webrtc/voice_engine/channel_proxy.cc
+++ b/webrtc/voice_engine/channel_proxy.cc
@@ -319,17 +319,13 @@ bool ChannelProxy::GetRecCodec(CodecInst* codec_inst) const {
 }
 
 void ChannelProxy::OnTwccBasedUplinkPacketLossRate(float packet_loss_rate) {
-  // TODO(eladalon): This fails in UT; fix and uncomment.
-  // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=7405
-  // RTC_DCHECK(worker_thread_checker_.CalledOnValidThread());
+  RTC_DCHECK(worker_thread_checker_.CalledOnValidThread());
   channel()->OnTwccBasedUplinkPacketLossRate(packet_loss_rate);
 }
 
 void ChannelProxy::OnRecoverableUplinkPacketLossRate(
     float recoverable_packet_loss_rate) {
-  // TODO(eladalon): This fails in UT; fix and uncomment.
-  // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=7405
-  // RTC_DCHECK(worker_thread_checker_.CalledOnValidThread());
+  RTC_DCHECK(worker_thread_checker_.CalledOnValidThread());
   channel()->OnRecoverableUplinkPacketLossRate(recoverable_packet_loss_rate);
 }