Add a convenience method to check for client supplied options in

net/quic/quic_sent_packet_manager.cc

Index: net/quic/quic_sent_packet_manager.cc
diff --git a/net/quic/quic_sent_packet_manager.cc b/net/quic/quic_sent_packet_manager.cc
index 4c5307562d3d833847802f061ec295b4675749ff..a142455ecb96173ea14489b5e847ad551befd9a6 100644
--- a/net/quic/quic_sent_packet_manager.cc
+++ b/net/quic/quic_sent_packet_manager.cc
@@ -117,26 +117,12 @@ void QuicSentPacketManager::SetFromConfig(const QuicConfig& config) {
     send_algorithm_.reset(
         SendAlgorithmInterface::Create(clock_, &rtt_stats_, kReno, stats_));
   }
-  if (is_server_) {
-    if (config.HasReceivedConnectionOptions() &&
-        ContainsQuicTag(config.ReceivedConnectionOptions(), kPACE)) {
-      EnablePacing();
-    }
-  } else if (config.HasSendConnectionOptions() &&
-             ContainsQuicTag(config.SendConnectionOptions(), kPACE)) {
+  if (HasClientSentConnectionOption(config, kPACE)) {
     EnablePacing();
   }
-  if (is_server_) {
-    if (config.HasReceivedConnectionOptions() &&
-        ContainsQuicTag(config.ReceivedConnectionOptions(), k1CON)) {
-      send_algorithm_->SetNumEmulatedConnections(1);
-    }
-  } else if (config.HasSendConnectionOptions() &&
-             ContainsQuicTag(config.SendConnectionOptions(), k1CON)) {
+  if (HasClientSentConnectionOption(config, k1CON)) {
     send_algorithm_->SetNumEmulatedConnections(1);
   }
-  // TODO(ianswett): Remove the "HasReceivedLossDetection" branch once
-  // the ConnectionOptions code is live everywhere.
   if (config.HasReceivedConnectionOptions() &&
       ContainsQuicTag(config.ReceivedConnectionOptions(), kTIME)) {
     loss_algorithm_.reset(LossDetectionInterface::Create(kTime));
@@ -148,6 +134,20 @@ void QuicSentPacketManager::SetFromConfig(const QuicConfig& config) {
   }
 }
 
+bool QuicSentPacketManager::HasClientSentConnectionOption(
+    const QuicConfig& config, QuicTag tag) const {
+  if (is_server_) {
+    if (config.HasReceivedConnectionOptions() &&
+        ContainsQuicTag(config.ReceivedConnectionOptions(), tag)) {
+      return true;
+    }
+  } else if (config.HasSendConnectionOptions() &&
+             ContainsQuicTag(config.SendConnectionOptions(), tag)) {
+    return true;
+  }
+  return false;
+}
+
 void QuicSentPacketManager::OnRetransmittedPacket(
     QuicPacketSequenceNumber old_sequence_number,
     QuicPacketSequenceNumber new_sequence_number) {