Break out of the loop in QuicSession::OnCanWrite if the QuicConnection

net/quic/quic_connection.cc

Index: net/quic/quic_connection.cc
diff --git a/net/quic/quic_connection.cc b/net/quic/quic_connection.cc
index 497aa929e30c06fe54cfab1ae7825b9b7650c8b6..49d6af61380853cd5a6a814d24a3f4cfe9251145 100644
--- a/net/quic/quic_connection.cc
+++ b/net/quic/quic_connection.cc
@@ -1562,6 +1562,21 @@ bool QuicConnection::HasQueuedData() const {
       !queued_packets_.empty() || packet_generator_.HasQueuedFrames();
 }
 
+bool QuicConnection::CanWriteStreamData() {
+  if (HasQueuedData()) {
+    return false;
+  }
+
+  IsHandshake pending_handshake = visitor_->HasPendingHandshake() ?
+      IS_HANDSHAKE : NOT_HANDSHAKE;
+  // Sending queued packets may have caused the socket to become write blocked,
+  // or the congestion manager to prohibit sending.  If we've sent everything
+  // we had queued and we're still not blocked, let the visitor know it can
+  // write more.
+  return ShouldGeneratePacket(NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA,
+                              pending_handshake);
+}
+
 void QuicConnection::SetIdleNetworkTimeout(QuicTime::Delta timeout) {
   if (timeout < idle_network_timeout_) {
     idle_network_timeout_ = timeout;