Add more logging about the bwe state and VideoSendStream state.

webrtc/call/bitrate_allocator.cc

Index: webrtc/call/bitrate_allocator.cc
diff --git a/webrtc/call/bitrate_allocator.cc b/webrtc/call/bitrate_allocator.cc
index 7e6242210cff6c78845446a9b3f65b67dfce5fa5..34b06b1984e34fbf179b3684166c20642843ea99 100644
--- a/webrtc/call/bitrate_allocator.cc
+++ b/webrtc/call/bitrate_allocator.cc
@@ -168,6 +168,10 @@ void BitrateAllocator::UpdateAllocationLimits() {
     }
   }
 
+  LOG(LS_INFO) << "UpdateAllocationLimits : total_requested_min_bitrate: "
+               << total_requested_min_bitrate
+               << "bps, total_requested_padding_bitrate: "
+               << total_requested_padding_bitrate << "bps";
   limit_observer_->OnAllocationLimitsChanged(total_requested_min_bitrate,
                                              total_requested_padding_bitrate);
 }