Split out QuicAlarm creation from QuicConnectionHelper to new QuicAlarmFactory.

net/tools/quic/quic_server.cc

Index: net/tools/quic/quic_server.cc
diff --git a/net/tools/quic/quic_server.cc b/net/tools/quic/quic_server.cc
index c67e554f2c819df4fa96fb5874a648a5386adb99..e7b8cb5e1c1cdf850a4c7853ed65815dee8f748a 100644
--- a/net/tools/quic/quic_server.cc
+++ b/net/tools/quic/quic_server.cc
@@ -20,6 +20,7 @@
 #include "net/quic/quic_data_reader.h"
 #include "net/quic/quic_protocol.h"
 #include "net/tools/quic/quic_dispatcher.h"
+#include "net/tools/quic/quic_epoll_alarm_factory.h"
 #include "net/tools/quic/quic_epoll_clock.h"
 #include "net/tools/quic/quic_epoll_connection_helper.h"
 #include "net/tools/quic/quic_in_memory_cache.h"
@@ -142,9 +143,10 @@ QuicDefaultPacketWriter* QuicServer::CreateWriter(int fd) {
 }
 
 QuicDispatcher* QuicServer::CreateQuicDispatcher() {
-  return new QuicDispatcher(config_, &crypto_config_, supported_versions_,
-                            new QuicEpollConnectionHelper(
-                                &epoll_server_, QuicAllocator::BUFFER_POOL));
+  return new QuicDispatcher(
+      config_, &crypto_config_, supported_versions_,
+      new QuicEpollConnectionHelper(&epoll_server_, QuicAllocator::BUFFER_POOL),
+      new QuicEpollAlarmFactory(&epoll_server_));
 }
 
 void QuicServer::WaitForEvents() {