Split out QuicAlarm creation from QuicConnectionHelper to new QuicAlarmFactory.

net/tools/quic/quic_epoll_connection_helper.h

 // 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_CONNECTION_HELPER_H_
 #define NET_TOOLS_QUIC_QUIC_EPOLL_CONNECTION_HELPER_H_
 
@@ skipping 25 matching lines @@
 enum class QuicAllocator { SIMPLE, BUFFER_POOL };
 
 class QuicEpollConnectionHelper : public QuicConnectionHelperInterface {
  public:
   QuicEpollConnectionHelper(EpollServer* eps, QuicAllocator allocator);
   ~QuicEpollConnectionHelper() override;
 
   // QuicEpollConnectionHelperInterface
   const QuicClock* GetClock() const override;
   QuicRandom* GetRandomGenerator() override;
-  QuicAlarm* CreateAlarm(QuicAlarm::Delegate* delegate) override;
-  QuicArenaScopedPtr<QuicAlarm> CreateAlarm(
-      QuicArenaScopedPtr<QuicAlarm::Delegate> delegate,
-      QuicConnectionArena* arena) override;
-
   QuicBufferAllocator* GetBufferAllocator() override;
 
   EpollServer* epoll_server() { return epoll_server_; }
 
  private:
   friend class QuicConnectionPeer;
 
   EpollServer* epoll_server_;  // Not owned.
-
   const QuicEpollClock clock_;
   QuicRandom* random_generator_;
   // Set up both allocators.  They take up minimal memory before use.
   QuicStreamBufferAllocator buffer_allocator_;
   SimpleBufferAllocator simple_buffer_allocator_;
   QuicAllocator allocator_type_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicEpollConnectionHelper);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_EPOLL_CONNECTION_HELPER_H_