Add the override annotation to all necessary methods in .../quic/.

net/quic/quic_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 15 matching lines @@
 
 class QuicClock;
 class QuicRandom;
 
 class NET_EXPORT_PRIVATE QuicConnectionHelper
     : public QuicConnectionHelperInterface {
  public:
   QuicConnectionHelper(base::TaskRunner* task_runner,
                        const QuicClock* clock,
                        QuicRandom* random_generator);
-
   virtual ~QuicConnectionHelper();
 
   // QuicConnectionHelperInterface
   virtual const QuicClock* GetClock() const OVERRIDE;
   virtual QuicRandom* GetRandomGenerator() OVERRIDE;
   virtual QuicAlarm* CreateAlarm(QuicAlarm::Delegate* delegate) OVERRIDE;
 
  private:
   base::WeakPtrFactory<QuicConnectionHelper> weak_factory_;
   base::TaskRunner* task_runner_;
   const QuicClock* clock_;
   QuicRandom* random_generator_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicConnectionHelper);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_HELPER_H_