Integrating the QuicStreamFactory into the network stack.

chrome/browser/io_thread.h

Index: chrome/browser/io_thread.h
diff --git a/chrome/browser/io_thread.h b/chrome/browser/io_thread.h
index fb7921a71cb25cf2111cf19e6d0a737bcca4a5e6..0f1eab35f76bd6d4ab95ef2c9c94253c906a6bcc 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -158,6 +158,7 @@ class IOThread : public content::BrowserThreadDelegate {
     Optional<bool> enable_spdy_compression;
     Optional<bool> enable_spdy_ping_based_connection_checking;
     Optional<net::NextProto> spdy_default_protocol;
+    Optional<uint16> origin_port_to_force_quic_on;
     // NetErrorTabHelper uses |dns_probe_service| to send DNS probes when a
     // main frame load fails with a DNS error in order to provide more useful
     // information to the renderer so it can show a more specific error page.