Add OVERRIDE to net/.

net/base/dnsrr_resolver.h

 // Copyright (c) 2011 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.
 
 #ifndef NET_BASE_DNSRR_RESOLVER_H_
 #define NET_BASE_DNSRR_RESOLVER_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 90 matching lines @@
   Handle Resolve(const std::string& name, uint16 rrtype,
                  uint16 flags, const CompletionCallback& callback,
                  RRResponse* response, int priority,
                  const BoundNetLog& netlog);
 
   // CancelResolve cancels an inflight lookup. The callback for this lookup
   // must not have already been called.
   void CancelResolve(Handle handle);
 
   // Implementation of NetworkChangeNotifier::IPAddressObserver
-  virtual void OnIPAddressChanged();
+  virtual void OnIPAddressChanged() OVERRIDE;
 
  private:
   friend class RRResolverWorker;
 
   void HandleResult(const std::string& name, uint16 rrtype, int result,
                     const RRResponse& response);
 
   // cache_ maps from a request to a cached response. The cached answer may
   // have expired and the size of |cache_| must be <= kMaxCacheEntries.
   //                < name      , rrtype>
   std::map<std::pair<std::string, uint16>, RRResponse> cache_;
   // inflight_ maps from a request to an active resolution which is taking
   // place.
   std::map<std::pair<std::string, uint16>, RRResolverJob*> inflight_;
 
   uint64 requests_;
   uint64 cache_hits_;
   uint64 inflight_joins_;
 
   bool in_destructor_;
 
   DISALLOW_COPY_AND_ASSIGN(DnsRRResolver);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_DNSRR_RESOLVER_H_