QuicAlarms are now allocated out of an arena in QuicConnection

net/quic/quic_chromium_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 Chrome-specific helper for QuicConnection which uses
 // a TaskRunner for alarms, and uses a DatagramClientSocket for writing data.
 
 #ifndef NET_QUIC_QUIC_CONNECTION_HELPER_H_
 #define NET_QUIC_QUIC_CONNECTION_HELPER_H_
 
@@ skipping 22 matching lines @@
  public:
   QuicChromiumConnectionHelper(base::TaskRunner* task_runner,
                                const QuicClock* clock,
                                QuicRandom* random_generator);
   ~QuicChromiumConnectionHelper() override;
 
   // QuicConnectionHelperInterface
   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;
 
  private:
   base::TaskRunner* task_runner_;
   const QuicClock* clock_;
   QuicRandom* random_generator_;
   SimpleBufferAllocator buffer_allocator_;
   base::WeakPtrFactory<QuicChromiumConnectionHelper> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicChromiumConnectionHelper);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_HELPER_H_