Standardize usage of virtual/override/final in net/

net/proxy/proxy_resolver_mac.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_PROXY_PROXY_RESOLVER_MAC_H_
 #define NET_PROXY_PROXY_RESOLVER_MAC_H_
 
 #include "base/compiler_specific.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_export.h"
 #include "net/proxy/proxy_resolver.h"
 #include "url/gurl.h"
 
 namespace net {
 
 // Implementation of ProxyResolver that uses the Mac CFProxySupport to implement
 // proxies.
 class NET_EXPORT ProxyResolverMac : public ProxyResolver {
  public:
   ProxyResolverMac();
-  virtual ~ProxyResolverMac();
+  ~ProxyResolverMac() override;
 
   // ProxyResolver methods:
-  virtual int GetProxyForURL(const GURL& url,
-                             ProxyInfo* results,
-                             const net::CompletionCallback& callback,
-                             RequestHandle* request,
-                             const BoundNetLog& net_log) override;
+  int GetProxyForURL(const GURL& url,
+                     ProxyInfo* results,
+                     const net::CompletionCallback& callback,
+                     RequestHandle* request,
+                     const BoundNetLog& net_log) override;
 
-  virtual void CancelRequest(RequestHandle request) override;
+  void CancelRequest(RequestHandle request) override;
 
-  virtual LoadState GetLoadState(RequestHandle request) const override;
+  LoadState GetLoadState(RequestHandle request) const override;
 
-  virtual void CancelSetPacScript() override;
+  void CancelSetPacScript() override;
 
-  virtual int SetPacScript(
-      const scoped_refptr<ProxyResolverScriptData>& script_data,
-      const net::CompletionCallback& /*callback*/) override;
+  int SetPacScript(const scoped_refptr<ProxyResolverScriptData>& script_data,
+                   const net::CompletionCallback& /*callback*/) override;
 
  private:
   scoped_refptr<ProxyResolverScriptData> script_data_;
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_RESOLVER_MAC_H_