Split out QuicAlarm creation from QuicConnectionHelper to new QuicAlarmFactory.

net/tools/quic/quic_epoll_alarm_factory.h

Index: net/tools/quic/quic_epoll_alarm_factory.h
diff --git a/net/tools/quic/quic_epoll_alarm_factory.h b/net/tools/quic/quic_epoll_alarm_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..154acc34c560a38b873d8050b7d8457dcce20904
--- /dev/null
+++ b/net/tools/quic/quic_epoll_alarm_factory.h
@@ -0,0 +1,36 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// The Google-specific helper for QuicConnection which uses
+// EpollAlarm for alarms, and used an int fd_ for writing data.
+
+#ifndef NET_TOOLS_QUIC_QUIC_EPOLL_ALARM_FACTORY_H_
+#define NET_TOOLS_QUIC_QUIC_EPOLL_ALARM_FACTORY_H_
+
+#include "net/quic/quic_alarm_factory.h"
+#include "net/tools/quic/quic_epoll_connection_helper.h"
+
+namespace net {
+
+// Creates alarms that use the supplied EpollServer for timing and firing.
+class QuicEpollAlarmFactory : public QuicAlarmFactory {
+ public:
+  explicit QuicEpollAlarmFactory(EpollServer* eps);
+  ~QuicEpollAlarmFactory() override;
+
+  // QuicAlarmFactory interface.
+  QuicAlarm* CreateAlarm(QuicAlarm::Delegate* delegate) override;
+  QuicArenaScopedPtr<QuicAlarm> CreateAlarm(
+      QuicArenaScopedPtr<QuicAlarm::Delegate> delegate,
+      QuicConnectionArena* arena) override;
+
+ private:
+  EpollServer* epoll_server_;  // Not owned.
+
+  DISALLOW_COPY_AND_ASSIGN(QuicEpollAlarmFactory);
+};
+
+}  // namespace net
+
+#endif  // NET_TOOLS_QUIC_QUIC_EPOLL_ALARM_FACTORY_H_