void ClientConnectionImpl::onAboveHighWatermark() {
  // This should never happen without an active stream/request.
  ASSERT(!pending_responses_.empty());
  request_encoder_->runHighWatermarkCallbacks();
}
void ClientConnectionImpl::onAboveHighWatermark() {
   
  ASSERT(!pending_responses_.empty());
  request_encoder_->runHighWatermarkCallbacks();
}