Add OVERRIDE to net/.

net/base/mock_host_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_MOCK_HOST_RESOLVER_H_
 #define NET_BASE_MOCK_HOST_RESOLVER_H_
 #pragma once
 
 #include <list>
 #include <map>
@@ skipping 149 matching lines @@
   void AllowDirectLookup(const std::string& host);
 
   // Simulate a lookup failure for |host| (it also can be a pattern).
   void AddSimulatedFailure(const std::string& host);
 
   // HostResolverProc methods:
   virtual int Resolve(const std::string& host,
                       AddressFamily address_family,
                       HostResolverFlags host_resolver_flags,
                       AddressList* addrlist,
-                      int* os_error);
+                      int* os_error) OVERRIDE;
 
  private:
   struct Rule;
   typedef std::list<Rule> RuleList;
 
   virtual ~RuleBasedHostResolverProc();
 
   RuleList rules_;
 };
 
@@ skipping 35 matching lines @@
   void Init(HostResolverProc* proc);
 
  private:
   scoped_refptr<HostResolverProc> current_proc_;
   scoped_refptr<HostResolverProc> previous_proc_;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_MOCK_HOST_RESOLVER_H_