Warn on missing OVERRIDE/virtual everywhere, not just in header files.

net/tools/quic/quic_time_wait_list_manager.cc

 // 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.
 
 #include "net/tools/quic/quic_time_wait_list_manager.h"
 
 #include <errno.h>
 
 #include "base/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 19 matching lines @@
 
 // A very simple alarm that just informs the QuicTimeWaitListManager to clean
 // up old guids. This alarm should be unregistered and deleted before the
 // QuicTimeWaitListManager is deleted.
 class GuidCleanUpAlarm : public EpollAlarm {
  public:
   explicit GuidCleanUpAlarm(QuicTimeWaitListManager* time_wait_list_manager)
       : time_wait_list_manager_(time_wait_list_manager) {
   }
 
-  virtual int64 OnAlarm() {
+  virtual int64 OnAlarm() OVERRIDE {
     EpollAlarm::OnAlarm();
     time_wait_list_manager_->CleanUpOldGuids();
     // Let the time wait manager register the alarm at appropriate time.
     return 0;
   }
 
  private:
   // Not owned.
   QuicTimeWaitListManager* time_wait_list_manager_;
 };
@@ skipping 250 matching lines @@
     // This guid has lived its age, retire it now.
     guid_map_.erase(oldest_guid->guid);
     time_ordered_guid_list_.pop_front();
     delete oldest_guid;
   }
   SetGuidCleanUpAlarm();
 }
 
 }  // namespace tools
 }  // namespace net